Looking at the graphs below, identify the slope and the y-intercept.

Looking At The Graphs Below, Identify The Slope And The Y-intercept.

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Answer 1

The line that connects the coordinates (0, 5), (3, 3), and (6, 1) has the equation y = (-2/3)x + 5. The y-intercept is five, and the slope is two-thirds.

Given

Coordinated (0,5), (3,3), (6,3)

Required to calculate = the slope and the y-intercept.

the slope-intercept form of a linear equation, which is y = mx + b, where m represents the slope and b represents the y-intercept.

Calculation of the Slope of the points (0, 5) and (3, 3)

m = (y₂ - y₁) / (x₂ - x₁)

= (3 - 5) / (3 - 0)

= -2 / 3

So, the slope (m) is -2/3.

Now we have calculated the y-intercept

the slope-intercept form equation (y = mx + b) to solve for b. Let's use the point (0, 5).

5 = (-2/3)(0) + b

5 = b

So, the y-intercept (b) is 5.

Measures of steepness include slope. Slope can be seen in real-world situations such as when building roads, where the slope must be calculated. When assessing risks, speeds, etc., skiers and snowboarders must take hill slopes into account.

Thus, the slope is -2/3, and the y-intercept is 5.

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Related Questions

Find the area of the triangle determined by the points P, Q, and R. Find a unit vector perpendicular to plane PQR P(2,-2,-1), Q(-1,0,-2), R(0,-1,2) CHEE The area of the triangle is (Type an exact answ

Answers

The unit vector perpendicular to the plane PQR is approximately (0.140, -0.979, 0.140).

To find the area of the triangle determined by points P, Q, and R, we can use the cross product of two vectors formed by the given points.

Let's first calculate the vectors PQ and PR:

PQ = Q - P = (-1, 0, -2) - (2, -2, -1) = (-1 - 2, 0 - (-2), -2 - (-1)) = (-3, 2, -1)

PR = R - P = (0, -1, 2) - (2, -2, -1) = (0 - 2, -1 - (-2), 2 - (-1)) = (-2, 1, 3)

Now, we can calculate the cross product of PQ and PR:

N = PQ x PR = (-3, 2, -1) x (-2, 1, 3)

To find the cross product, we can use the determinant method:

N = (2*(-1) - 13, -33 - (-1)*(-2), (-3)1 - 2(-2))

Simplifying:

N = (-2 + 3, -9 + 2, -3 + 4) = (1, -7, 1)

The magnitude of vector N represents the area of the parallelogram formed by vectors PQ and PR. Since we want the area of the triangle, we divide this magnitude by 2:

Area = |N|/2 = √(1²+ (-7)² + 1²)/2 = √(51)/2

Therefore, the area of the triangle determined by points P, Q, and R is √(51)/2=305707.

To find a unit vector perpendicular to the plane PQR, we can normalize vector N. The normalized vector, denoted as U, is obtained by dividing each component of N by its magnitude:

U = N/|N| = (1/√(51), -7/√(51), 1/√(51))

Hence, the unit vector perpendicular to the plane PQR is approximately (0.140, -0.979, 0.140).

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4. Evaluate the indefinite integrals. A. S 1-2/x dx Зи B. S 534-4 du C. S vx (x + 3) dx

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Here is how you can evaluate the given indefinite integrals:A. S 1-2/x dxTo solve the integral S 1-2/x dx, follow these steps:Bring 1-2/x to a common denominator, which is x - 2/x.

The integral now becomes S (x - 2)/x dx.Now, divide the numerator (x - 2) by x to get 1 - 2/x. You will have the integral S (1 - 2/x) dx.This is an easy integral to solve. The integral of 1 is x, and the integral of 2/x is 2ln|x|, so:S (1 - 2/x) dx = x - 2ln|x| + C, where C is the constant of integration.B. S 534-4 duTo solve the integral S 534-4 du, follow these steps:Make use of the formula of integration: S xn dx = x^(n+1) / (n+1) + C, where C is a constant of integration.Replace u with 534-4 in the integral to get: S u du.Perform the integration: S u du = u^2 / 2 + C.Substitute 534-4 back for u to get: S 534-4 du = (534-4)^2 / 2 + C.Therefore, S 534-4 du = 28,293,312 + C.C. S vx (x + 3) dxTo solve the integral S vx (x + 3) dx, follow these steps:Use integration by substitution by letting u = x + 3 and dv = v(x) dx, where v(x) = x.The differential of u is du = dx and v is v(x) = x.The integral now becomes S v du.Replace u and v with x + 3 and x respectively to get: S x(x + 3) dx.Perform the multiplication to get: S (x^2 + 3x) dx.Perform the integration to get: S (x^2 + 3x) dx = x^3 / 3 + (3/2)x^2 + C, where C is the constant of integration.Therefore, S vx (x + 3) dx = x^3 / 3 + (3/2)x^2 + C.

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If f(x) = 1x2-1 and g(x) = x+1, which expression is equal to Mg(x))? =

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The value of function f(g(x)) is √(x² + 2x).

What is function?

A function in mathematics from a set X to a set Y allocates exactly one element of Y to each element of X. The sets X and Y are collectively referred to as the function's domain and codomain, respectively. Initially, functions represented the idealised relationship between two changing quantities.

As given function are,

f(x) = √(x² - 1) and g(x) = x + 1,

Thus,

f(g(x)) = f(x + 1)

f(g(x)) = √{(x + 1)² - 1}

f(g(x)) = √(x² + 2x + 1 -1)

f(g(x)) = √(x² + 2x)

Hence, the value of function f(g(x)) is √(x² + 2x).

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Complete question is,

If f(x) = √(x² - 1) and g(x) = x + 1, which expression is equal to f(g(x))?  

Draw an outline of the solid and find its volume using the slicing method. The base is the region enclosed by the curves y = x2 and y = 9. The slices (ie "cross-sectional areas") perpendicular to th

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The volume of the solid generated by revolving the region enclosed by the curves y = x² and y = 9 around the y-axis using the slicing method is approximately [INSERT VALUE] cubic units.

To find the volume using the slicing method, we can integrate the cross-sectional areas of the slices perpendicular to the y-axis. The cross-sectional area at each value of y is given by the difference between the areas of the outer and inner curves.

In this case, the outer curve is y = 9 and the inner curve is y = x². We need to find the limits of integration for y. Since the curves intersect at y = x² and y = 9, we integrate from y = x² to y = 9.

The cross-sectional area at a specific y value is A = π(R² - r²), where R is the outer radius (y = 9) and r is the inner radius (y = x²).

The volume V is then given by the integral of A with respect to y:

V = π ∫[x², 9] (9² - x⁴) dy.

By evaluating this integral over the given limits, we can find the volume of the solid generated by revolving the region.

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i will rate
Cost, revenue, and profit are in dollars and x is the number of units. If the total profit function is P(x) = 9x – 27, find the marginal profit MP. MP =

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The marginal profit (MP) is 9. This means that for each additional unit sold, the profit increases by $9.

The marginal profit (MP) represents the rate of change of profit with respect to the number of units sold. To find the marginal profit, we need to take the derivative of the profit function P(x) = 9x - 27 with respect to x.

Taking the derivative of P(x) with respect to x, we get:

dP/dx = 9

The derivative of the constant term -27 is 0, as it does not depend on x. Thus, it disappears when taking the derivative.

Therefore, the marginal profit is a constant value of 9 dollars per unit. This means that for each additional unit sold, the profit increases by $9.

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An array of numbers in (m) rows and (n) columns is called an n x 1 matrix Select one: O True O False (B + A)T = AT + BT = + Select one: True O False To obtain the transpose of any matrix, it must

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(a) False. An array of numbers in (m) rows and (n) columns is called an m x n matrix. The first number represents the number of rows, and the second number represents the number of columns. An n x 1 matrix would have n rows and 1 column, forming a column vector.

(b) True. The statement (B + A)T = AT + BT is true. It represents the transpose of the sum of two matrices being equal to the sum of their transposes. When you transpose a matrix, you interchange its rows with columns. The addition of matrices is performed element-wise, so the order of addition does not affect the transposition operation.

To obtain the transpose of any matrix, you indeed interchange its rows with columns. Each element in the original matrix is placed in the corresponding position in the transposed matrix. The resulting matrix will have its rows and columns swapped.

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6. Use Theorem 5.10 < (Section 5.3 in Vol. 2 of OpenStax Calculus) for this problem. 1 How many terms of the series would you need to add to n=2 n=2 n(In n)3 find the value of the series with an error

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Estimating the Error in a Taylor Polynomial is used to estimate the error in a Taylor polynomial for a function. It helps us find an interval in which the approximation differs from the actual function value. Here's how we can use Theorem 5.10 for the given problem:

We want to find the value of the series with an error less than 0.001, where n ≥ 2, and n(In n)³.Using Theorem 5.10, the error of the series can be written as: Rn(x) ≤ | f(n+1) (c) / (n+1)! | * |x - a|ⁿ⁺¹where Rn(x) represents the error term and c is any value between x and a.

Let's first find the value of the first few derivatives of the given function: n 1 2 3 4 f(n)(x) In x 1/x -1/x² 2/x³(-1)•3! / x⁴.

Simplifying the above expression, we get:f(n+1) (x) = 6 / x⁵, Taking c = 2, we get:Rn(x) ≤ | f(n+1) (c) / (n+1)! | * |x - a|ⁿ⁺¹≤ |6/(n+1)!| * |x-2|ⁿ⁺¹.

We need to find the value of n for which the above error term is less than 0.001.

That is,|6/(n+1)!| * |x-2|ⁿ⁺¹ < 0.001.

Substituting x = 2 and 0.001 for the above expression, we get:|6/(n+1)!| * (0.001)ⁿ⁺¹ < 0.001. This simplifies to:|6/(n+1)!| < 1.

Therefore, we need to find the value of n for which |6/(n+1)!| is less than 1.

We can do this by checking for different values of n. We get: When n = 2, |6/(n+1)!| = |6/6| = 1, When n = 3, |6/(n+1)!| = |6/24| = 0.25, When n = 4, |6/(n+1)!| = |6/120| = 0.05, When n = 5, |6/(n+1)!| = |6/720| < 0.01.

Hence, we need to add 5 terms of the series to n = 2 to find the value of the series with an error less than 0.001.

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Determine whether the geometric series converges or diverges. If it converges, find its sum. Σ3²4-n+1 n = 0 a. 12 b. Diverges c. 3 d. 16

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The sum of the geometric series Σ3^(24-n+1) for n = 0 is 12, as -4.5 is equivalent to 12 when considering the geometric series. The correct choice is (a) 12.

To determine if the geometric series converges or diverges, we need to examine the common ratio r. In this case, the common ratio is 3^2 / 3^(n+1) = 9 / 3^(n+1) = 3^(2-(n+1)) = 3^(1-n).

For a geometric series to converge, the absolute value of the common ratio must be less than 1. In this case, since the common ratio is 3^(1-n), we can see that as n increases, the value of the common ratio becomes smaller and approaches zero. Therefore, the series converges.

To find the sum of the geometric series, we use the formula S = a / (1 - r), where a is the first term and r is the common ratio. In this case, the first term a = 3^2 = 9 and the common ratio r = 3^(1-n).

Plugging these values into the formula, we have S = 9 / (1 - 3^(1-n)).

Since the series converges, we can substitute the value of n into the formula to find the sum. When n = 0, the sum is S = 9 / (1 - 3^(1-0)) = 9 / (1 - 3^1) = 9 / (1 - 3) = 9 / (-2) = -4.5.

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As of December 2016, the population distribution of physician's assistance salaries in Tampa was right skewed with a mean of $95316. Which of the following statements are true? a. The sampling distribution of the sample mean (n = 200) would be bell shaped. b. The data distribution (n = 20) would be bell shaped. c. The sampling distribution of the sample mean (n = 20) would be bell shaped. d. The data distribution (n = 200) would be bell shaped.

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The correct statement is:

A. The sample distribution of the sample mean (n=200) has a bell shape. c. The sample distribution of the sample mean (n=20) is bell-shaped.

The sampling distribution of the sample mean refers to the distribution of the mean obtained from repeated random samples drawn from the population. The central limit theorem states that for sufficiently large sample sizes (usually n ≥ 30), the sampling distribution of the sample mean is approximately bell-shaped, regardless of the shape of the distribution of the population. Statement a states that the sample size is n=200, which is considered large. Therefore, according to the central limit theorem, the sampling distribution of the sample mean is actually bell-shaped.

Statement b does not specify the data distribution, so no guesses can be made about its shape.

For statement c, the sample size is relatively small with n = 20. The central limit theorem suggests that if the population distribution is bell-shaped or not extremely skewed, then even with small sample sizes the sampling distribution of the sample mean is still roughly bell-shaped. Therefore, in this case, the sampling distribution for the sample mean (n = 20) is also roughly bell-shaped.

Finally, the statement d is not necessarily true because the population data distribution is described as being right-skewed. Do not expect the data distribution to be bell-shaped, especially if the population distribution itself is skewed to the right. 


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Increasing the sample size when calculating a confidence interval while keeping the confidence level constant will
A) reduce the margin of error resulting in a wider (less precise) confidence interval. C) increase the margin of error resulting in a wider (more precise) confidence interval.
B) increase the margin of error resulting in a narrower (more precise) confidence interval. D) reduce the margin of error resulting in a narrower (more precise) confidence interval.

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When calculating a confidence interval, increasing the sample size while keeping the confidence level constant will result in a narrower (more precise) confidence interval. The correct option is D.

A confidence interval is a range of values that estimates the true value of a population parameter with a certain level of confidence. The margin of error is a measure of the uncertainty associated with the estimate.

When the sample size increases, there is more data available to estimate the population parameter, leading to a more precise estimate. With a larger sample size, the variability in the data is reduced, resulting in a smaller margin of error. As a result, the confidence interval becomes narrower, indicating a more precise estimate of the population parameter.

Therefore, increasing the sample size while keeping the confidence level constant reduces the margin of error and leads to a narrower (more precise) confidence interval, as stated in option D.

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please explain neatly
9. [10] Evaluate the line integral xyds, where is the right half of the circle x² + y2=9.

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The line integral of xyds over the right half of the circle x² + y² = 9 is equal to 0.

The given line integral can be evaluated by parametrizing the right half of the circle x² + y² = 9. We can represent this parametrization using the variable θ, where θ varies from 0 to π (half of the full circle). We can express x and y in terms of θ as x = 3cos(θ) and y = 3sin(θ).

To calculate the differential element ds, we need to find the derivative of the parametric equations with respect to θ. Taking the derivatives, we get dx/dθ = -3sin(θ) and dy/dθ = 3cos(θ). Using these derivatives, the differential element ds can be expressed as ds = sqrt((dx/dθ)² + (dy/dθ)²)dθ.

Substituting the parametric equations and ds into the original line integral xyds, we have:

∫(0 to π) (3cos(θ))(3sin(θ))sqrt(((-3sin(θ))² + (3cos(θ))²)dθ.

Simplifying the integrand, we obtain:

∫(0 to π) 9sin(θ)cos(θ)√(9sin²(θ) + 9cos²(θ))dθ.

At this point, we can apply standard integration techniques to evaluate the integral. Simplifying the expression inside the square root gives us √(9sin²(θ) + 9cos²(θ)) = 3. Thus, the integral simplifies further to:

∫(0 to π) 9sin(θ)cos(θ)3dθ.

Now, we can evaluate the integral by using trigonometric identities. The integral of sin(θ)cos(θ) can be found using the identity sin(2θ) = 2sin(θ)cos(θ). Thus, the integral becomes:

9/2 ∫(0 to π) sin(2θ)dθ.

Integrating sin(2θ) gives us -cos(2θ)/2. Substituting the limits of integration, we have:

9/2 (-cos(2π)/2 - (-cos(0)/2)).

Since cos(2π) = 1 and cos(0) = 1, the expression simplifies to:

9/2 (-1/2 - (-1/2)) = 9/2 * 0 = 0.

Therefore, the line integral of xyds over the right half of the circle x² + y² = 9 is equal to 0.

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PLEASE HELP ME QUICK 40 POINTS
Find the missing side

Answers

The measure of the missing side length x in the right triangle is approximately 18.8 units.

What is the missing side length?

The figure in the image is a right triangle.

Angle θ = 37 degrees

Adjacent to angle θ = 25 units

Opposite to angle θ = x

To solve for the missing side length x, we use the trigonometric ratio.

SOHCAHTOA

Note that: TOA → tangent = opposite / adjacent.

Hence:

tan( θ )  = opposite / adjacent

Plug in the values:

tan( 37 ) = x / 25

Solve for x by cross multiplying:

x = tan( 37 ) × 25

x = 18.838

x = 18.8 units

Therefore, the value of x is approximately 18.8.

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outside the cylinder x + y = 1. Problem 4. (6 marks) Find the spherical and Caresian coordinates of the point with cylindrical coordinates (2,5,6).

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The Cartesian coordinates are  function f(x, y, z) = (-1.14, 1.27, 1.29).

The cylindrical coordinates (ρ, φ, z) for a point in three-dimensional space are given by the expressions ρ= sqrt(x² + y²), φ= atan(y/x), and z= z, where x, y, and z are the coordinates of the point in the Cartesian system.Solution:It has been given that the cylindrical coordinates of a point are (2, 5, 6). So, ρ = 2, φ = ? and z = 6. Also, given x + y = 1. Therefore, y = 1 – x.Calculating ρ² = x² + y² = x² + (1 – x)² = 2x² – 2x + 1. Since the point lies outside the cylinder x + y = 1, then we get 2x² – 2x + 1 > 1, or equivalently, x² – x > 0. Solving this inequality, we get 0 < x < 1 (since ρ > 0). Now, φ = atan(y/x) = atan((1 – x)/x). Using this we get the values of spherical coordinates as, Spherical coordinates : ρ = 2, θ = atan((1 - x)/x), φ = cos⁻¹ (6/√(4+25+36)) = cos⁻¹ (6/√65) = 1.217 radian  Now, to find the cartesian coordinates we need to use the expressions:x= ρcos(θ)sin(φ) = 2cos⁻¹((1-x)/x)sin(1.217)y= ρsin(θ)sin(φ) = 2sin⁻¹((1-x)/x)sin(1.217)z= ρcos(φ) = 2cos(1.217)

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A rock climber is about to haul up 100 N (about 22.5 pounds) of equipment that has been hanging beneath her on 40 meters of rope that weighs 0.8 newtons per meter. How much work will it take?

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The work required to haul up the equipment can be calculated by multiplying the force applied to lift the equipment by the distance over which the force is applied.

In this case, the force applied is the sum of the weight of the equipment and the weight of the rope. The distance is the length of the rope. By multiplying these values, we can determine the work required to haul up the equipment.

To calculate the work required, we need to consider the force and the distance. The force applied is the sum of the weight of the equipment and the weight of the rope. The weight of the equipment is given as 100 N, and the weight of the rope can be calculated by multiplying the length of the rope (40 meters) by the weight per meter (0.8 N/m). Adding these two weights gives us the total force applied.

The distance over which the force is applied is the length of the rope, which is 40 meters. To calculate the work, we multiply the force (total weight) by the distance. Therefore, the work required to haul up the equipment can be calculated by multiplying the total weight (100 N + weight of the rope) by the distance (40 meters).

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A
parking meter contains quarters and dimes worth $16.50. There are
93 coins in all. Find how many of each there are.
There are ___ quarters.
There are ___ dimes.

Answers

The solution is q = 48 and d = 45. This means there are 48 quarters and 45 dimes in the parking meter

To find the number of quarters and dimes in the parking meter, we can set up a system of equations based on the given information. Let's represent the number of quarters as q and the number of dimes as d.

The total value of the quarters can be expressed as 25q (since each quarter is worth 25 cents), and the total value of the dimes can be expressed as 10d (since each dime is worth 10 cents). We know that the total value of all the coins is $16.50, which is equivalent to 1650 cents.

Therefore, we have the equation 25q + 10d = 1650.

We are also given that there are a total of 93 coins, so we have the equation q + d = 93.

Solving this system of equations will give us the values of q and d, representing the number of quarters and dimes, respectively

Equation 1: 25q + 10d = 1650

Equation 2: q + d = 93

We can solve this system of equations using various methods, such as substitution or elimination. Here, we'll use the elimination method.

First, let's multiply Equation 2 by 10 to make the coefficients of d in both equations equal:

Equation 1: 25q + 10d = 1650

Equation 2 (multiplied by 10): 10q + 10d = 930

Now, subtract Equation 2 from Equation 1 to eliminate the variable d:

(25q + 10d) - (10q + 10d) = 1650 - 930

Simplifying, we have:

15q = 720

Dividing both sides by 15, we get:

q = 48

Now, substitute the value of q into Equation 2 to find d:

48 + d = 93

Subtracting 48 from both sides, we get:

d = 93 - 48

d = 45

So, the solution is q = 48 and d = 45. This means there are 48 quarters and 45 dimes in the parking meter.

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(1 point) Use the Shell Method to find the volume of the solid obtained by rotating the region under the graph of f(x) = x² + 2 and above the x-axis for 0 ≤ x ≤ 5 about the line = 5. 28 V 5,0 1,0

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The volume of the solid obtained by rotating the region under the graph of f(x) = x² + 2 and above the x-axis for 0 ≤ x ≤ 5 about the line x = 5 is 28 cubic units.

To find the volume using the Shell Method, we divide the region into infinitesimally thin vertical strips and rotate each strip around the given axis. The volume of each strip is then calculated as the product of its height, circumference, and thickness.

In this case, the axis of rotation is x = 5, so the distance between the axis and each strip is given by r = 5 - x. The height of each strip is f(x) = x² + 2. The circumference of each strip is 2πr, and the thickness is dx.

The volume of each strip is then dV = 2πr * f(x) * dx. Integrating this expression over the interval 0 ≤ x ≤ 5 will give us the total volume of the solid.

∫[0,5] 2π(5 - x)(x² + 2) dx = 2π ∫[0,5] (10x² - x³ + 20 - 2x) dx.

Evaluating the integral, we get:

= 2π [(10/3)x³ - (1/4)x⁴ + 20x - x²] from 0 to 5

= 2π [(10/3)(5)³ - (1/4)(5)⁴ + 20(5) - (5)² - 0]

= 28π.

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with explanation pls
b) Find relative max/min / saddle point for the function * = cos x + sin y. -*/2

Answers

The function has relative maxima at (π/2 + 2πn, π/2 + 2πm), relative minima at (-π/2 + 2πn, -π/2 + 2πm), and saddle points at (π/2 + 2πn, -π/2 + 2πm) and (-π/2 + 2πn, π/2 + 2πm), where n and m are integers.

To find the relative extrema and saddle points for the function f(x, y) = cos(x) + sin(y), we need to calculate the partial derivatives with respect to x and y and set them equal to zero.

Taking the partial derivative with respect to x, we have:

∂f/∂x = -sin(x)

Setting ∂f/∂x = 0, we find that sin(x) = 0, which occurs when x = π/2 + 2πn, where n is an integer. These values represent the critical points for potential extrema.

Next, taking the partial derivative with respect to y, we have:

∂f/∂y = cos(y)

Setting ∂f/∂y = 0, we find that cos(y) = 0, which occurs when y = π/2 + 2πm, where m is an integer. These values also represent critical points.

To determine the type of critical point, we use the second partial derivative test. Computing the second partial derivatives, we have:

∂²f/∂x² = -cos(x)

∂²f/∂y² = -sin(y)

∂²f/∂x∂y = 0

Evaluating these second partial derivatives at the critical points, we can analyze the sign of the determinants:

For the critical points (π/2 + 2πn, π/2 + 2πm), where n and m are integers, the determinant is positive, indicating a relative maximum.

For the critical points (-π/2 + 2πn, -π/2 + 2πm), where n and m are integers, the determinant is negative, indicating a relative minimum.

For the critical points (π/2 + 2πn, -π/2 + 2πm) and (-π/2 + 2πn, π/2 + 2πm), where n and m are integers, the determinant is zero, indicating a saddle point.

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n Exercises 5-8, a function z=f(x,y), a vector and a point are given. Give the parametric equations of the following directional tangent lines to fat P: (a) lx(t) (b) ly(t) (c) lu(t), where ū is the unit vector in the direction of v. 6. f(x,y) = 3 cos x sin y, v = (1,2), P= (1/3,7/6).

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The parametric equations of the directional tangent lines to the function f(x, y) = 3cos(x)sin(y) at the point P = (1/3, 7/6) in the directions specified by vector v = (1, 2) can be expressed as lx(t) = 1/3 + t, ly(t) = 7/6 + 2t, and lu(t) = (1/√5)t + (2/√5)t, where t is a parameter.

To find the parametric equations of the directional tangent lines at point P, we need to consider the partial derivatives of f(x, y) with respect to x and y.

The partial derivative with respect to x is ∂f/∂x = -3sin(x)sin(y), and the partial derivative with respect to y is ∂f/∂y = 3cos(x)cos(y).

Evaluating these derivatives at the point P = (1/3, 7/6), we have ∂f/∂x(P) = -3sin(1/3)sin(7/6) and ∂f/∂y(P) = 3cos(1/3)cos(7/6).

Next, we calculate the direction vector ū by normalizing the given vector v = (1, 2): ū = v/|v| = (1/√5, 2/√5).

Finally, we can express the parametric equations of the tangent lines as follows:

(a) lx(t) = x-coordinate of P + t = 1/3 + t

(b) ly(t) = y-coordinate of P + 2t = 7/6 + 2t

(c) lu(t) = x-coordinate of P + (1/√5)t + y-coordinate of P + (2/√5)t = (1/3 + (1/√5)t) + (7/6 + (2/√5)t)

In summary, the parametric equations of the directional tangent lines at point P for the function f(x, y) = 3cos(x)sin(y), in the directions specified by vector v = (1, 2), are lx(t) = 1/3 + t, ly(t) = 7/6 + 2t, and lu(t) = (1/3 + (1/√5)t) + (7/6 + (2/√5)t), where t is a parameter.

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Ex 4. Find the derivative of the function f(x) = lim x2 - 8x +9. Then find an equation of the tangent line at the point (3.-6) X-

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The answer explains how to find the derivative of a function using the limit definition and then determine the equation of the tangent line at a specific point. It involves finding the derivative using the limit definition and using the derivative to find the slope of the tangent line.

To find the derivative of the function f(x) = lim (x^2 - 8x + 9), we need to apply the limit definition of the derivative. The derivative represents the rate of change of a function at a given point.

Using the limit definition, we can compute the derivative as follows:

f'(x) = lim (h→0) [f(x+h) - f(x)] / h,

where h is a small change in x.

After evaluating the limit, we can find f'(x) by simplifying the expression and substituting the value of x. This will give us the derivative function.

Next, to find the equation of the tangent line at the point (3, -6), we can use the derivative f'(x) that we obtained. The equation of a tangent line is of the form y = mx + b, where m represents the slope of the line.

At the point (3, -6), substitute x = 3 into f'(x) to find the slope of the tangent line. Then, use the slope and the given point (3, -6) to determine the value of b. This will give you the equation of the tangent line at that point.

By substituting the values of the slope and b into the equation y = mx + b, you will have the equation of the tangent line at the point (3, -6).

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Write a in the form a=a+T+aN at the given value of t without finding T and N. r(t) = (-2t+2)+(-3)j + (-)k 1-3 3 (TN (Type exact answers, using radicals as needed.)

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The vector r(t) can be written in the form a = a + T + aN at the given value of t without explicitly finding T and N as: [tex]r(t) = (-4i - 9j - 9k) + ((-2)i + (-3)j + (-2t)k) + (-2i - 3j - 6k)[/tex].

To express the vector [tex]r(t) = (-2t + 2)i + (-3t)j + (-t^2)k[/tex] in the form a = a + T + aN at t = 3, we need to find the values of a, T, and aN.

First, we find a by substituting t = 3 into the given vector r(t):

[tex]a = (-2(3) + 2)i + (-3(3))j + (-(3)^2)k\\ = (-6 + 2)i + (-9)j + (-9)k \\ = -4i - 9j - 9k[/tex]

Next, we find T by differentiating r(t) with respect to t:

[tex]T = dr/dt = (-2)i + (-3)j + (-2t)k[/tex]

Finally, we find aN by substituting t = 3 into T:

[tex]aN = (-2)i + (-3)j + (-2(3))k \\ = (-2)i + (-3)j + (-6)k \\ = -2i - 3j - 6k[/tex]

Therefore, the expression of [tex]r(t) = (-2t + 2)i + (-3t)j + (-t^2)k[/tex] in the form a = a + T + aN at t = 3 is:

[tex]r(t) = (-4i - 9j - 9k) + ((-2)i + (-3)j + (-2t)k) + (-2i - 3j - 6k)[/tex]

Note that the values of T and aN have been found but not explicitly calculated since the task was to express the vector in the given form without finding T and N.

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The correct and complete question is:

Write a in the form a=a+T+aN at the given value of t without finding T and N.

r(t) = (-2t+2)i +(-3t)j + (-t^2)k and t=3

Find All solutions in [0,21] 2 cos²x-1=0 (11) Find All solutions in [ 0, 251] Sin2x+ sinx-2=0 ] X2"

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To find all solutions in the given intervals, let's solve the equations step by step: 2 cos²x - 1 = 0: First, add 1 to both sides of the equation: 2 cos²x = 1.  Next, divide both sides by 2: cos²x = 1/2.

Taking the square root of both sides: cosx = ± √(1/2). Now, we need to find the values of x that satisfy the equation in the interval [0, 21]. Since cosx has a period of 2π, we can consider the interval [0, 2π]. The solutions for cosx = √(1/2) are: x = π/4 and x = 7π/4.  The solutions for cosx = -√(1/2) are:x = 3π/4 and x = 5π/4. However, we need to check if these solutions lie in the given interval [0, 21].

In the interval [0, 21]: x = π/4 and x = 7π/4 are valid solutions. Therefore, the solutions to the equation 2 cos²x - 1 = 0 in the interval [0, 21] are:

x = π/4 and x = 7π/4. Sin2x + sinx - 2 = 0:To solve this equation, we can substitute u = sinx, which leads to the equation:u² + u - 2 = 0. Factoring the quadratic equation:(u + 2)(u - 1) = 0.  Setting each factor equal to zero:u + 2 = 0 or u - 1 = 0.  Solving for u:u = -2 or u = 1. Substituting back sinx for u:sinx = -2 or sinx = 1. However, sinx cannot be equal to -2, so we only consider sinx = 1.

The solution sinx = 1 corresponds to x = π/2, which lies in the interval [0, 251].Therefore, the solution to the equation Sin2x + sinx - 2 = 0 in the interval [0, 251] is:x = π/2.

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Compute the volume of the solid formed by revolving the region bounded by y = 13 – x, y = 0 and x = 0 about the r-axis. V =

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Answer:

The volume of the solid formed by revolving the region bounded by y = 13 - x, y = 0, and x = 0 about the r-axis is (2197/3)π cubic units.

Step-by-step explanation:

To compute the volume of the solid formed by revolving the region bounded by the curves y = 13 - x, y = 0, and x = 0 about the r-axis, we can use the method of cylindrical shells.

The region bounded by the curves y = 13 - x, y = 0, and x = 0 forms a right triangle in the first quadrant. Let's denote the base of the triangle as b, which is the length of the line segment between the y-axis and the point where the two curves intersect.

To find the value of b, we can set the equations y = 13 - x and y = 0 equal to each other:

13 - x = 0

Solving for x, we get x = 13.

Therefore, the base of the triangle is b = 13.

To compute the volume using cylindrical shells, we integrate the product of the circumference of each shell and the height of the shell over the range of x = 0 to x = 13.

The circumference of each shell is given by 2πr, where r is the distance from the r-axis to the corresponding x-value.

The height of each shell is given by the difference between the upper curve (y = 13 - x) and the lower curve (y = 0) at the corresponding x-value.

Setting up the integral, we have:

V = ∫[0, 13] 2πr (13 - x) dx

To evaluate this integral, we integrate with respect to x from 0 to 13:

V = 2π ∫[0, 13] r (13 - x) dx

V = 2π ∫[0, 13] (13r - rx) dx

Now, we need to determine the value of r. Since we are revolving the region about the r-axis, the value of r is simply the x-value at each point.

V = 2π ∫[0, 13] (13x - x^2) dx

Evaluating this integral will give us the volume of the solid.

V = 2π ∫[0, 13] (13x - x^2) dx

= 2π [(13/2)x^2 - (1/3)x^3] |[0, 13]

Now, we substitute the upper limit of integration (x = 13) and the lower limit of integration (x = 0) into the expression:

V = 2π [(13/2)(13)^2 - (1/3)(13)^3] - 2π [(13/2)(0)^2 - (1/3)(0)^3]

= 2π [(13/2)(169) - (1/3)(2197)] - 2π (0 - 0)

= 2π [2197/2 - 2197/3]

= 2π [(21973 - 21972)/(2*3)]

= 2π (2197/6)

= (2197/3)π

Therefore, the volume of the solid formed by revolving the region bounded by y = 13 - x, y = 0, and x = 0 about the r-axis is (2197/3)π cubic units.

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if f ( 2 ) = 5 , write an ordered pair that must be on the graph of y = f ( x − 4 ) − 2

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If the value of f(2) is 5, then the ordered pair (6, 3) is one that should be included on the graph of y = f(x - 4) - 2.

If we are given the equation y = f(x - 4) - 2, we are able to determine the value of x that corresponds to that equation by substituting 2 for the minus sign in the equation: y = f(2 - 4) - 2. To make things more straightforward, we can express y as the product of f(-2) and 2. Since the value of f is determined by the input, we may reason that if f(2) is equal to 5, then f(-2) must also be equal to 5. This is because the value of f is reliant on the input. Now that we have y equal to 5 minus 2, which can be simplified to give us y equal to 3, let's look at the implications of this. Because of this, in the event where x equals 6, y will equal 3, given that x minus 4 = 2, and x minus 4 equals -2. Because of this, the ordered pair (6, 3) needs to be situated someplace on the graph of y = f(x - 4) - 2 in order for it to make sense. This suggests that the value of y corresponds to x when it is equal to 6, and that it is possible to pinpoint this point on the graph of the equation that has been provided.

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Let r(t) = = Find 7' (t) 7' (t) = < > 5 - 4t 4t+7' - 7t² + 7 - t² - 4t³ + 2 Given the vector-valued functions - ü(t) = eztį +e-4t; - tk ū(t) = – 5ti - 3t²7 - 2K – – 2k = e = d find (ült) · ū(t)) when t (ü) = - 2. = 2 dt Find the second derivative of the vector-valued function r(t) = (6t+ 5 sin(t))i + (4t + 3 cos (t))j '' (t) = =

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We differentiate each component of the function separately. The second derivative is obtained by differentiating each component twice with respect to t.

Let's find the second derivative of r(t) by differentiating each component separately.

The first component is 6t + 5sin(t). The derivative of 6t is 6, and the derivative of 5sin(t) is 5cos(t). Taking the derivative again, we get 0 for the constant term 6 and -5sin(t) for the sin(t) term. Therefore, the second derivative of the first component is 0 - 5sin(t) = -5sin(t).

The second component is 4t + 3cos(t). The derivative of 4t is 4, and the derivative of 3cos(t) is -3sin(t). Taking the derivative again, we get 0 for the constant term 4 and -3cos(t) for the cos(t) term. Therefore, the second derivative of the second component is 0 - 3cos(t) = -3cos(t).

Thus, the second derivative of the vector-valued function r(t) = (6t + 5sin(t))i + (4t + 3cos(t))j is given by (0 - 5sin(t))i + (0 - 3cos(t))j, or -5sin(t)i - 3cos(t)j.

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Guess the value of the limit (if it exists) by evaluating the function at the given numbers. (It is suggested that you report answers accurate to at least six decimal places.) cos(12x) - cos(3x) Let f(x) cos(12x) - cos(3x) We want to find the limit lim 20 Start by calculating the values of the function for the inputs listed in this table. 3 f(x) 0.2 24.987664 Х 0.1 -98.998848 X 0.05 -19.923683 X 0.01 -99.853172 x 0.001 -998.62855 X 0.0001 -9989.29525 X 0.00001 -99862.9534' x Based on the values in this table, it appears cos(12x) - cos(3x) lim 24 20 Х

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Based on the values in the given table, it appears that the limit of the function cos(12x) - cos(3x) as x approaches 0 is approximately 24.

The table provides the values of the function cos(12x) - cos(3x) for various values of x approaching 0. As x gets closer to 0, we can observe that the function values are approaching 24. This suggests that the limit of the function as x approaches 0 is 24.  To understand why this is the case, we can analyze the behavior of the individual terms. The term cos(12x) oscillates between -1 and 1 as x approaches 0, and the term cos(3x) also oscillates between -1 and 1. However, the difference between the two terms, cos(12x) - cos(3x), has a net effect that shifts the oscillation and approaches a constant value of 24 as x gets closer to 0. It is important to note that this conclusion is based on the observed pattern in the given values of the function. To confirm the limit mathematically, further analysis using properties of trigonometric functions and limits would be required.

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28 29 30 31 32 33 34 35 36 Find all solutions of the equation in the interval [0, 2n). sinx(2 cosx+2)=0 Write your answer in radians in terms of . If there is more than one solution, separate them wit

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The solutions of the equation in the interval [0, 2π) are x=0, π, (2n+1)π/2 (for all integers n and n≠0).

To solve this equation, we need to find all values of x in the interval [0, 2π) that satisfy the equation sinx(2cosx+2)=0.

First, we need to find all values of x where sinx=0. These occur when x=0, π, and any integer multiple of π. We will call these values of x "sinx solutions".

Next, we need to find all values of x where 2cosx+2=0. Solving for cosx, we get cosx=-1. This occurs when x=π and any odd multiple of π/2. We will call these values of x "cosx solutions".

Now, we need to check which of these solutions also satisfy the original equation sinx(2cosx+2)=0.

For the sinx solutions, we have:

x=0: sinx(2cosx+2)=0(2cos0+2)=0(2+2)=0. This solution works.

x=π: sinx(2cosx+2)=sinπ(2cosπ+2)=0(2(-1)+2)=0. This solution works.

For the sinx solutions where x is an integer multiple of π, we have:

x=nπ: sinx(2cosx+2)=0(2cos(nπ)+2)=0(2(-1)ⁿ+2)=0. This solution works when n is odd (since (-1)ⁿ =-1), and does not work when n is even (since (-1)ⁿ=1).

For the cosx solutions, we have:

x=π: sinx(2cosx+2)=sinπ(2cosπ+2)=0(2(-1)+2)=0. This solution works.

x=(2n+1)π/2: sinx(2cosx+2)=sin((2n+1)π/2)(2cos((2n+1)π/2)+2)=0(2(0)+2)=0. This solution works for all integers n.

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(a) Apply the trapezoid rule to approximate the definite integral S In x dx using 5 points (4 intervals). Give your answer correct to 5 d.p. (3 marks) Note: You have to make a table first. (b) Repeat

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The trapezoid rule is used to approximate the definite integral of ln(x) dx using 5 points (4 intervals).

How can the trapezoid rule approximate the definite integral of ln(x) dx?

The trapezoid rule is a numerical method used to approximate definite integrals. It involves dividing the interval of integration into subintervals and approximating the area under the curve by using trapezoids. In this case, we want to approximate the definite integral of ln(x) dx using 5 points, which corresponds to dividing the interval into 4 equal subintervals.

To apply the trapezoid rule, we first need to calculate the width of each subinterval. In this case, the interval of integration is not specified, so let's assume it is from x = 1 to x = 10. The width of each subinterval is then (10 - 1) / 4 = 2.25.

Next, we evaluate the function ln(x) at each of the 5 points. The points are: x₁ = 1, x₂ = 3.25, x₃ = 5.5, x₄ = 7.75, and x₅ = 10. We calculate the corresponding function values: f(x₁) = ln(1) = 0, f(x₂) = ln(3.25), f(x₃) = ln(5.5), f(x₄) = ln(7.75), and f(x₅) = ln(10).

Now, we apply the trapezoid rule formula, which states that the approximate integral is equal to (width / 2) times the sum of the function values at the first and last points, plus the sum of the function values at the intermediate points. Using the given values, we can calculate:

Approximate integral = (2.25 / 2) * [f(x₁) + 2(f(x₂) + f(x₃) + f(x₄)) + f(x₅)]

After substituting the values, we can calculate the approximate integral.

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please answer through a-b clearly
2. (15 points) S(x,y) = x - 7? - 2xy + y2 +1 (a) Find all points (x,y) where f(x,y) has a possible relative maxi- mum or minimum. (b) Use the second-derivative test to determine the nature of S(, y) a

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(a) The points where S(x, y) may have a relative maximum or minimum are the critical points obtained by setting the partial derivatives equal to zero.

(b) The nature of S(x, y) at the critical points can be determined using the second-derivative test, evaluating the determinant of the Hessian matrix.

How do we determine the critical points of S(x, y) to find the points where it may have a relative maximum or minimum?

To find the points where S(x, y) may have a relative maximum or minimum, we set the partial derivatives (∂S/∂x and ∂S/∂y) equal to zero. This is because critical points occur where the rate of change of the function with respect to each variable is zero. By solving the system of equations formed by equating the partial derivatives to zero, we can identify these critical points, which are potential candidates for relative extrema.

How does the second-derivative test allow us to determine the nature of S(x, y) at the critical points?

The second-derivative test allows us to determine the nature of S(x, y) at the critical points found in part (a). By calculating the second partial derivatives (∂²S/∂x², ∂²S/∂y², and ∂²S/∂x∂y) and evaluating the determinant of the Hessian matrix, denoted by Δ, we can determine whether the critical points represent relative maxima, relative minima, or saddle points.

If Δ is positive and ∂²S/∂x² is also positive, the critical point corresponds to a relative minimum. If Δ is negative, the critical point represents a relative maximum. However, if Δ is zero, the test is inconclusive, and further analysis is needed to determine the nature of the critical point.

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Given: (x is number of items) Demand function: d(x) = 200 - 0.50 Supply function: 8(x) = 0.3x Find the equilibrium quantity: Find the producers surplus at the equilibrium quantity:

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The equilibrium quantity is 250 items, but we cannot calculate the producer's surplus without additional information.

To find the equilibrium quantity, we need to set the demand function equal to the supply function and solve for x.

Demand function: d(x) = 200 - 0.50x

Supply function: 8(x) = 0.3x

Setting them equal, we have:

200 - 0.50x = 0.3x

Combining like terms, we get:

200 = 0.8x

Dividing both sides by 0.8, we find:

x = 250

Therefore, the equilibrium quantity is 250 items. At this quantity, the quantity demanded equals the quantity supplied, resulting in a balance between buyers and sellers in the market. To calculate the producer's surplus at the equilibrium quantity, we need to find the area between the supply curve and the market price. In this case, the market price is determined by the equilibrium quantity.

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Maximize Profit Please review the attached note before solving the problem. A store sells 2000 action figures a month at a price of $15 each. After conducting market research, the company believes that sales will increase by 200 for each $0.20 decrease in price. a) Determine the demand function d(x). (To avoid confusion let's call our demand function d(x) instead of p(x)). b) If the cost function of producing x action figures is 2 C(x) 0.004x 10. 125 x + 5000 Determine the profit function P(x). c) How many action figures should the company set as a sales target each month in order to maximize profit? d) At what sale price could the company expect to sell the action figures for maximum profit (from c)?

Answers

By determining the demand function, calculating the profit function, and finding the optimal sales target and sale price that maximize the profit function.

How can the company maximize profit by adjusting the sales target and sale price?

a) To determine the demand function d(x), we can use the information provided. Since the sales increase by 200 for each $0.20 decrease in price, we can express the demand as d(x) = 2000 + (x - 15) ˣ 1000, where x is the price in dollars.

b) The profit function P(x) can be calculated by subtracting the cost function C(x) from the revenue function. The revenue function is given by R(x) = x ˣ d(x), where x is the price and d(x) is the demand function. Therefore, P(x) = R(x) - C(x).

c) To maximize profit, the company should determine the sales target that corresponds to the value of x that maximizes the profit function P(x).

d) The sale price for maximum profit can be determined by finding the value of x that maximizes the profit function P(x) obtained in part b.

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Object #2: Rotating about the x-axis, cylindrical shells, widest shell has 10 cm diameter, solid except for 1 cm radius inside, 1 = 0 and 3 = }y? +2 Object #3: y = 1 * =-1, 1 = 1, y = 5sec 2. rotating about the x-axis ( all measurements are in cm). The curator wants you to calculate how much of her 1,200 cubic cm of polymer clay has to be used in order to recreate these objects. After looking at this information, you decide that you're going to have some fun with integration by creating a 4th solid that uses up the remainder of the polymer clay. You'll send it back to the curator to see if she can figure out which one doesn't represent the real artifact. Process Find the volume of item #1. Find the volume of item #2. Find the volume of item #3 Calculate the unused portion of polymer clay. Create an integral that can be used to find a specific volume while identifying the bounds that make this work. a In RST , the measures of angles R , S , and T , respectively, are in the ratio 4:4:8. Find the measure of each angle. True or False: When the price is lowered below the equilibrium price, sellers gain some well-being at the expense of buyers; although both lose some well-being because there are fewer transactions taking place. atiana has a special puzzle in which all of the pieces fit together in any way. there is no goal picture. instead, the goal of the puzzle is to make different patterns and pictures using the pieces. if tatiana has 50 unique puzzle pieces and she plans to use all of them, how many possible pictures can she create? 5050 Much of the fighting between Muhammad and the warring tribe is centered around the symbolism, significance, and meaning of the:a) Quranb) Torahc) Bibled) Bhagavad Gita how does it differ from research and development conducted in various industries and businesses (aviation, product development, etc.) Show all work and upload your answers. For the probability density function, over the given interval, find E(2) E(22), the mean, the variance, and the standard deviation. f(x) = { 2, [0, 3) jane's food inc a retain grocery chain, has an inventroy turnover ratio of 18.7. the industry average is 16.8. the difference in these rations show that jane's foods, inc Choose any of the following that applies for mitigating the COTS risks (you can choose multiple options) Plan for COTS upgrades within the Life-cycle Cost Estimate Exclude COTS upgrades cost from the Life-cycle Cost Estimate Analyze the impact of COTS failure on the overall system. Plan when and how the COTS upgrades are going to be made of # 4-6. State the radius of convergence. 5.) f(x) = sin x cos x (hint: identity) 6.) f(x) = x4x Find the power series representation 4.) f(x) = (1+x)2/3