A mirror in a circular wooden frame is shown in the diagram below. The radius of the mirror alone is 21 inches. The radius of the mirror and the frame is 24 inches. Marcia wants to paint the top surface of the frame, but only has enough paint to cover 400 in' of the frame. Does Marcia have enough paint? Show how you found your answer.

Answers

Answer 1

Since 400 is less than 424.9, we can conclude that Marcia does have enough paint to cover the top surface of the frame, given the area of 400 square inches.

To determine if Marcia has enough paint to cover the top surface of the frame, we need to calculate the area of the top surface of the frame.

The radius of the mirror alone is 21 inches, and the radius of the mirror and frame combined is 24 inches. Therefore, the width of the frame can be calculated by subtracting the mirror's radius from the radius of the combined mirror and frame.

Width of the frame = (Radius of the mirror and frame) - (Radius of the mirror)

Width of the frame = 24 inches - 21 inches

Width of the frame = 3 inches

The top surface of the frame can be considered as a circular band with an outer radius of 24 inches and an inner radius of 21 inches. To find the area of the top surface, we need to calculate the difference between the areas of the outer circle and the inner circle.

Area of the outer circle = π * (Radius of the mirror and frame)^2

Area of the outer circle = π * (24 inches)^2

Area of the inner circle = π * (Radius of the mirror)^2

Area of the inner circle = π * (21 inches)^2

Area of the top surface of the frame = Area of the outer circle - Area of the inner circle

Area of the top surface of the frame = (π * (24 inches)^2) - (π * (21 inches)^2)

Area of the top surface of the frame = (π * 576 square inches) - (π * 441 square inches)

Area of the top surface of the frame = 135π square inches

Now, we know that Marcia has enough paint to cover 400 square inches of the frame. We can compare this value to the area of the top surface of the frame (135π square inches) to determine if she has enough paint.

400 square inches < 135π square inches

To find the approximate value of π, we can use 3.14 as a reasonable estimate. Let's substitute it into the inequality:

400 < 135 * 3.14

400 < 424.9

Since 400 is less than 424.9, we can conclude that Marcia does have enough paint to cover the top surface of the frame, given the area of 400 square inches.

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Related Questions

Owen invested $310 in an account paying an interest rate of 7 7/8% compounded continuously. Dylan invested $310 in an account paying an interest rate of 7 1/4% compounded monthly. To the nearest hundredth of a year, how much longer would it take for Dylan's money to triple than for Owen's money to triple?

Answers

It would take approximately 1.34 years longer for Dylan's money to triple compared to Owen's money.

To find out how much longer it would take for Dylan's money to triple compared to Owen's money, we need to determine the time it takes for each investment to triple.

For Owen's investment, the continuous compound interest formula can be used:

A = P * e^(rt)

Where:

A = Final amount (triple the initial amount, so 3 * $310 = $930)

P = Principal amount ($310)

e = Euler's number (approximately 2.71828)

r = Interest rate (7 7/8% = 7.875% = 0.07875 as a decimal)

t = Time (in years)

Plugging in the values, we have:

930 = 310 * e^(0.07875t)

Now, let's solve for t:

e^(0.07875t) = 930 / 310

e^(0.07875t) = 3

Take the natural logarithm of both sides:

0.07875t = ln(3)

Solving for t:

t = ln(3) / 0.07875 ≈ 11.15 years

For Dylan's investment, the compound interest formula with monthly compounding can be used:

A = P * (1 + r/n)^(nt)

Where:

A = Final amount (triple the initial amount, so 3 * $310 = $930)

P = Principal amount ($310)

r = Interest rate per period (7 1/4% = 7.25% = 0.0725 as a decimal)

n = Number of compounding periods per year (12, since it compounds monthly)

t = Time (in years)

Plugging in the values, we have:

930 = 310 * (1 + 0.0725/12)^(12t)

Now, let's solve for t:

(1 + 0.0725/12)^(12t) = 930 / 310

(1 + 0.0060417)^(12t) = 3

Taking the natural logarithm of both sides:

12t * ln(1.0060417) = ln(3)

Solving for t:

t = ln(3) / (12 * ln(1.0060417)) ≈ 9.81 years

The difference in time it takes for Dylan's money to triple compared to Owen's money is:

11.15 - 9.81 ≈ 1.34 years

Therefore, it would take approximately 1.34 years longer for Dylan's money to triple compared to Owen's money.

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Find the area of the interior of the four-petaled rose T= sin(20) Area = Evaluate this integral by hand and give the exact answer. Notice the relationship between the area of the rose and the area of the circle (radius 1) in which it lies. Is this relationship true regardless of radius?

Answers

True. The area of a circle of radius 1 is π, which implies that the area of the four-petaled rose of the same radius is half the area of the circle.

The four-petaled rose is a polar graph of the equation r = sin(2θ). The name rose comes from its appearance.

The rose is a lovely geometric figure. The rose is also a well-known curve used in designing.

The rose has four identical petals and is a perfect example of symmetry.

The area of the interior of the four-petaled rose T = sin(20) can be found as follows:

We know that the formula for finding the area of a polar curve is given as A = 1/2 ∫[tex]a^b r^2[/tex] dθ

Using the given polar equation, we get r = sin(2θ), and the limits of integration are from 0 to π/4. Thus, the integral expression for finding the area of the four-petaled rose is:

[tex]A = 1/2 \int _0^{\pi /4 }(sin2\theta)^2 d\theta= 1/2 \int _0^{\pi /4 } sin^4(2\theta) d\theta[/tex]

Let u = 2θ, so that du/dθ = 2. Therefore, dθ = du/2. Substituting this into the above equation, we get:

The exact answer for the area of the interior of the four-petaled rose T = sin(20) is given as (π + 2 - 4/π)/32.

The rose and the circle share a unique relationship. The area of the rose is always half the area of the circle in which it is drawn. The area of a circle of radius 1 is π, which implies that the area of the four-petaled rose of the same radius is (π + 2 - 4/π)/16, which is half the area of the circle. Therefore, it is true regardless of radius.

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For the vectors a and b, la x bl = |a||6|if and only if X a and b are not perpendicular a= b a and b are perpendicular a and b are parallel a and b are not parallel

Answers

The statement "la x bl = |a||6| if and only if" is true when a and b are either equal or not parallel, while a and b being perpendicular or parallel would invalidate this equality.

The statement "la x bl = |a||6| if and only if" suggests that the magnitude of the cross product between vectors a and b is equal to the product of the magnitudes of a and b only under certain conditions.

These conditions include a and b not being perpendicular, a and b not being parallel, and a and b being either equal or not parallel.

The cross product of two vectors, denoted by a x b, produces a vector that is perpendicular to both a and b. The magnitude of the cross product is given by |a x b| = |a||b|sin(theta), where theta is the angle between the vectors.

Therefore, if |a x b| = |a||b|, it implies that sin(theta) = 1, which means theta must be 90 degrees or pi/2 radians.

If a and b are perpendicular, their cross product will be non-zero, indicating that they are not parallel. Thus, the statement "a and b are not perpendicular" holds.

If a and b are equal, their cross product will be the zero vector, and the magnitudes will also be zero. In this case, |a x b| = |a||b| holds, satisfying the given condition.

If a and b are parallel, their cross product will be zero, but the magnitudes will not be equal unless both vectors are zero. Hence, the statement "a and b are not parallel" is valid.

If a and b are not parallel, their cross product will be non-zero, and the magnitudes will be unequal. Therefore, |a x b| will not be equal to |a||b|, contradicting the given condition.

In conclusion, the statement "la x bl = |a||6| if and only if" is true when a and b are either equal or not parallel, while a and b being perpendicular or parallel would invalidate this equality.

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DETAILS SCALCET8 12.5.069. Let P be a point not on the line L that passes through the points Q and R. The distance d from the point P to the line Lis d= a x b la/ where a QR and b = QP. A Use the above formula to find the distance from the point to the given line. (4, 3, -1); x = 1+t, y=3- 3t, z = 3 - 3t d= Need Help? Read It Watch it Submit Answer MY NOTES HY NOTES AS

Answers

To find the distance from the point (4, 3, -1) to the given line defined by x = 1 + t, y = 3 - 3t, z = 3 - 3t, we can use the formula provided:

d = |a x b| / |a|

where a is the direction vector of the line (QR) and b is the vector from any point on the line (Q) to the given point (P).

Step 1: Find the direction vector a of the line (QR):

The direction vector of the line is obtained by taking the coefficients of t in the equations x = 1 + t, y = 3 - 3t, z = 3 - 3t. Therefore, a = (1, -3, -3).

Step 2: Find vector b from a point on the line (Q) to the given point (P):

To find vector b, subtract the coordinates of point Q (1, 3, 3) from the coordinates of point P (4, 3, -1):

b = (4 - 1, 3 - 3, -1 - 3) = (3, 0, -4).

Step 3: Calculate the cross product of a x b:

To find the cross product, take the determinant of the 3x3 matrix formed by a and b:

| i j k |

| 1 -3 -3 |

| 3 0 -4 |

a x b = (0 - 0) - (-3 * -4) i + (3 * -4) - (3 * 0) j + (3 * 0) - (1 * -3) k

= 12i + 12j + 3k

= (12, 12, 3).

Step 4: Calculate the magnitudes of a and a x b:

The magnitude of a is |a| = √(1^2 + (-3)^2 + (-3)^2) = √19.

The magnitude of a x b is |a x b| = √(12^2 + 12^2 + 3^2) = √177.

Step 5: Calculate the distance d using the formula:

d = |a x b| / |a| = √177 / √19.

Therefore, the distance from the point (4, 3, -1) to the line x = 1 + t, y = 3 - 3t, z = 3 - 3t is d = √177 / √19.

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Let R be the region in the first quadrant bounded below by the parabola y = x² and above by the line y = 2. Then the value of ſf yx dA is: None of these This option This option +I3 6 This option Thi

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The value of the double integral ∫∫R yx dA, where R is the region bounded below by the parabola y = x² and above by the line y = 2 in the first quadrant, is None of these.

To calculate the double integral ∫∫R yx dA, we need to determine the limits of integration for both x and y over the region R. The region R is defined as the area bounded below by the parabola y = x² and above by the line y = 2 in the first quadrant. To find the limits of integration for x, we set the two equations equal to each other:

x² = 2

Solving this equation, we get x = ±√2. Since we are only interested in the region in the first quadrant, we take x = √2 as the upper limit for x. For the limits of integration for y, we consider the range between the two curves:

x² ≤ y ≤ 2

However, since the parabola is below the line in this region, it does not contribute to the integral. Therefore, the value of the double integral is 0, which means that None of these is the correct option.

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give an equation in the standard coordinates for images that describes an ellipse centered at the origin with a length 4 major cord parallel to the vector images and a length 2 minor axis. (the major cord is the longest line segment that can be inscribed in the ellipse.)

Answers

An equation in the standard coordinates for images that describes an ellipse centered at the origin with a length 4 major cord parallel to the vector images and a length 2 minor axis is (x^2)/4 + (y^2) = 1.

An ellipse centered at the origin with a length 4 major chord parallel to the vector images and a length 2 minor axis can be described by the following equation in standard coordinates:

(x^2)/(a^2) + (y^2)/(b^2) = 1

"a" represents the semi-major axis, and "b" represents the semi-minor axis. Since the major chord has a length of 4, the semi-major axis (a) is half of that, or 2. Similarly, the minor axis has a length of 2, so the semi-minor axis (b) is half of that, or 1.

Substituting these values into the equation, we get:

(x^2)/(2^2) + (y^2)/(1^2) = 1

Simplifying the equation, we have:

(x^2)/4 + (y^2) = 1

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Find each sum or difference
1. (4a - 5)+(3a + 6)
2. (6x + 9)+ (4x^2 - 7)
3. (6xy + 2y + 6x) + (4xy - x)

Answers

1. (4a - 5)+(3a + 6) = 7a + 1.
To solve, you simply combine the like terms (4a and 3a) to get 7a, and then combine the constants (-5 and 6) to get 1.


2. (6x + 9)+ (4x^2 - 7) = 4x^2 + 6x + 2.
To solve, you combine the like terms (6x and 4x^2) to get 4x^2 + 6x, and then combine the constants (9 and -7) to get 2.

3. (6xy + 2y + 6x) + (4xy - x) = 10xy + 2y + 6x - x = 10xy + 2y + 5x.
To solve, you combine the like terms (6xy and 4xy) to get 10xy, then combine the constants (2y and -x) to get 2y - x, and finally combine the like terms (6x and 5x) to get 11x. The final answer is 10xy + 2y + 5x.

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Use the basic integration rules to find or evaluate the integral. LINK) e In(5x) х dx

Answers

The approximate value of the integral from 1 to e of [ln(5x)/x] dx is -0.5.'

To evaluate the integral ∫[ln(5x)/x] dx with the lower limit of 1 and upper limit of e, we can apply the basic integration rules.

First, let's rewrite the integral as follows:

∫[ln(5x)/x] dx = ∫ln(5x) * (1/x) dx

Now, we can integrate this expression using the rule for integration by parts:

∫u * v dx = u * ∫v dx - ∫(u' * ∫v dx) dx

Let's choose u = ln(5x) and dv = (1/x) dx, so du = (1/x) dx and v = ln|x|.

Applying the integration by parts formula, we have:

∫ln(5x) * (1/x) dx = ln(5x) * ln|x| - ∫(1/x) * ln|x| dx

Now, let's evaluate the integral of (1/x) * ln|x| dx using another integration rule. We rewrite it as:

∫(1/x) * ln|x| dx = ∫ln|x| * (1/x) dx

Again, applying the integration by parts formula, we choose u = ln|x| and dv = (1/x) dx, so du = (1/x) dx and v = ln|x|.

∫ln|x| * (1/x) dx = ln|x| * ln|x| - ∫(1/x) * ln|x| dx

Now, notice that we have the same integral on both sides of the equation. Let's denote this integral as I:

I = ∫(1/x) * ln|x| dx

Substituting this back into the equation, we have:

I = ln|x| * ln|x| - I

Rearranging the equation, we get:

2I = ln|x| * ln|x|

Dividing both sides by 2, we have:

I = (1/2) * ln|x| * ln|x|

Now, let's go back to the original integral:

∫[ln(5x)/x] dx = ln(5x) * ln|x| - ∫(1/x) * ln|x| dx

Substituting the value of I, we have:

∫[ln(5x)/x] dx = ln(5x) * ln|x| - (1/2) * ln|x| * ln|x| + C

where C is the constant of integration.

Finally, we can evaluate the definite integral with the limits of integration from 1 to e:

∫[ln(5x)/x] dx (from 1 to e) = [ln(5e) * ln|e| - (1/2) * ln|e| * ln|e|] - [ln(5) * ln|1| - (1/2) * ln|1| * ln|1|]

Since ln|e| = 1 and ln|1| = 0, the expression simplifies to:

∫[ln(5x)/x] dx (from 1 to e) = ln(5e) - (1/2) * ln(e) * ln(e) - ln(5)

Simplifying further, we have:

∫[ln(5x)/x] dx (from 1 to e) = ln(5e) - (1/2) - ln(5)

Therefore, the value of the integral from 1 to e of [ln(5x)/x] dx is:

∫[ln(5x)/x] dx (from 1 to e) = ln(5e) - (1/2) - ln(5)

To obtain a numerical approximation, we can substitute the corresponding values:

∫[ln(5x)/x] dx (from 1 to e) ≈ ln(5e) - (1/2) - ln(5)

≈ ln(5 * 2.71828...) - (1/2) - ln(5)

≈ 1.60944... - (1/2) - 1.60944...

≈ -0.5

Therefore, the approximate value of the integral from 1 to e of [ln(5x)/x] dx is -0.5.

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Find the coefficients of the Maclaurin series
(1 point) Find the Maclaurin series of the function f(x) = (8x2)e-8x. = 0 f(= Σ f(x) = Ž cx" " n=0 Determine the following coefficients: C1 = C2 = C3 = C4 = C5 =

Answers

The Maclaurin series is f(x) = Σ [tex]C_{n}[/tex] * [tex]x^{n}[/tex].  The coefficients are [tex]C_{1}[/tex] = 0, [tex]C_{2}[/tex] = 16, [tex]C_{3}[/tex] = -128, [tex]C_{4}[/tex] = 0 and [tex]C_{5}[/tex] = -12288.

To find the Maclaurin series of the function f(x) = (8[tex]x^{2}[/tex])[tex]e^{-8x}[/tex] , we can start by expanding the function using the Maclaurin series formula.

The Maclaurin series formula is given by:

f(x) = Σ  [tex]C_{n}[/tex] [tex]x^{n}[/tex]

To determine the coefficients [tex]C_{1}[/tex] ,  [tex]C_{2}[/tex] ,  [tex]C_{3}[/tex] ,  [tex]C_{4}[/tex], and  [tex]C_{5}[/tex] , we can differentiate the function f(x) and evaluate the derivatives at x = 0.

First, let's find the derivatives of f(x):

[tex]f^{1}[/tex] (x) = d/dx [ (8[tex]x^{2}[/tex])[tex]e^{-8x}[/tex] ]

= (16x - 64[tex]x^{2}[/tex])[tex]e^{-8x}[/tex]

[tex]f^{2}[/tex] (x) = [tex]d^{2}[/tex]/d[tex]x^{2}[/tex] [(8[tex]x^{2}[/tex])[tex]e^{-8x}[/tex] ]

= (16 - 128x + 512[tex]x^{2}[/tex])[tex]e^{-8x}[/tex]

[tex]f^{3}[/tex] (x) = [tex]d^{3}[/tex]/d[tex]x^{3}[/tex] [(8[tex]x^{2}[/tex])[tex]e^{-8x}[/tex] ]

= (-128 + 1536x - 4096[tex]x^{2}[/tex])[tex]e^{-8x}[/tex]

[tex]f^{4}[/tex] (x) = [tex]d^{4}[/tex]/d[tex]x^{4}[/tex] [(8[tex]x^{2}[/tex])[tex]e^{-8x}[/tex] ]

= (3072x - 12288[tex]x^{2}[/tex] + 8192[tex]x^{3}[/tex])[tex]e^{-8x}[/tex]

[tex]f^{5}[/tex] (x) = [tex]d^{5}[/tex]/d[tex]x^{5}[/tex] [(8[tex]x^{2}[/tex])[tex]e^{-8x}[/tex] ]

= (-12288 + 61440x - 61440[tex]x^{2}[/tex] + 16384[tex]x^{3}[/tex])[tex]e^{-8x}[/tex]

Now, let's evaluate the derivatives at x = 0 to find the coefficients:

[tex]C_{1}[/tex]  = [tex]f^{1}[/tex] (0) = (16 * 0 - 64 * [tex]0^{2}[/tex] )[tex]e^{-8*0}[/tex]  = 0

[tex]C_{2}[/tex]  = [tex]f^{2}[/tex] (0) = (16 - 128 * 0 + 512 * [tex]0^{2}[/tex])[tex]e^{-8*0}[/tex]  = 16

[tex]C_{3}[/tex]  = [tex]f^{3}[/tex](0) = (-128 + 1536 * 0 - 4096 * [tex]0^{2}[/tex])[tex]e^{-8*0}[/tex]  = -128

[tex]C_{4}[/tex] = [tex]f^{4}[/tex] (0) = (3072 * 0 - 12288 * [tex]0^{2}[/tex] + 8192 * [tex]0^{3}[/tex])[tex]e^{-8*0}[/tex]  = 0

[tex]C_{5}[/tex]  = [tex]f^{5}[/tex] 0) = (-12288 + 61440 * 0 - 61440 * [tex]0^{2}[/tex] + 16384 * [tex]0^{3}[/tex])[tex]e^{-8*0}[/tex]   = -12288

Therefore, the coefficients are:

[tex]C_{1}[/tex]  = 0

[tex]C_{2}[/tex] 2 = 16

[tex]C_{3}[/tex]  = -128

[tex]C_{4}[/tex] = 0

[tex]C_{5}[/tex]  = -12288

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triangles abc and xyz are similar. the length of the sides of abc are 121 cm, 105 cm, and 98 cm. the length of the smallest side of xyz is 52 cm, what is the length of the longest side of xyz? round your answer to one decimal place.

Answers

Since triangles abc and xyz are similar, their corresponding sides are proportional.

Let's label the sides of triangle xyz as a, b, and c. We know that the smallest side of xyz (side a) is 52 cm. We need to find the length of the longest side of xyz (which we can label as side c).
We can set up a proportion to solve for c:  121/52 = 105/b = 98/c
Solving for b, we get:  121/52 = 105/b
b = (105*52)/121
b ≈ 45.6
Now we can set up a new proportion to solve for c:  121/52 = 98/c
Multiplying both sides by c, we get:  121c/52 = 98
Solving for c, we get:
c = (98*52)/121
c ≈ 42.3
Therefore, the length of the longest side of xyz is approximately 42.3 cm.

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At a school, 60% of students buy a school lunch, 18% of students buy a dessert, and 10% of students buy a lunch and a dessert.
a. What is the probability that a student who buys lunch also buys dessert?
b. What is the probability that a student who buys dessert also buys lunch?

Answers

Considering the definition of conditional probability, the probability that a student who buys lunch also buys dessert is 1/6 and the probability that a student who buys dessert also buys lunch is 5/9.

Definition of conditional probability

Probability is the greater or lesser possibility that a certain event will occur. In other words, the probability establishes a relationship between the number of favorable events and the total number of possible events.

The conditional probability P(A|B) is the probability that event A occurs, given that another event B also occurs. That is, it is the probability that event A occurs if event B has occurred. It is defined as:

P(A|B) = P(A∩B)÷ P(B)

Probability that a student who buys lunch also buys dessert

In this case, being the events:

A= A student buys a school lunchB= A student buys a dessert

you know:

P(A)= 60%= 0.60P(B)= 18%= 0.18P(A∩B)= 10%= 0.10

Then, the probability that a student who buys lunch also buys dessert is calculated as:

P(B|A) = P(A∩B)÷ P(A)

So:

P(B|A) =0.10÷ 0.60

P(B|A) = 1/6

Finally, the probability that a student who buys lunch also buys dessert is 1/6.

Probability that a student who buys dessert also buys lunch

The probability that a student who buys dessert also buys lunch is calculated as:

P(A|B) = P(A∩B)÷ P(B)

So:

P(A|B) = 0.10÷ 0.18

P(A|B) = 5/9

Finally, the probability that a student who buys dessert also buys lunch is 5/9.

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37 Set up an integral that represents the length of the curve. Then use your calculator to find the length correct to four deci- mal places. 37. x=ite, y=t-e', 0+1=2 I

Answers

The integral that represents the length of the curve is L = ∫[0,1] √(2 + 2e^(-t) + 2e^t + e^(2t) + e^(-2t)) dt. The length of the curve is 2.1099

To find the length of the curve defined by the parametric equations x = t - e^t and y = t - e^-t, we can use the arc length formula for parametric curves:

L = ∫[a,b] √(dx/dt)^2 + (dy/dt)^2 dt

In this case, our parameter t ranges from 0 to 1, so the integral becomes:

L = ∫[0,1] √((dx/dt)^2 + (dy/dt)^2) dt

Let's calculate the derivatives dx/dt and dy/dt:

dx/dt = 1 - e^t

dy/dt = 1 + e^(-t)

Now we can substitute these derivatives back into the arc length integral:

L = ∫[0,1] √((1 - e^t)^2 + (1 + e^(-t))^2) dt

Simplifying the expression under the square root:

L = ∫[0,1] √(1 - 2e^t + e^(2t) + 1 + 2e^(-t) + e^(-2t)) dt

L = ∫[0,1] √(2 + 2e^(-t) + 2e^t + e^(2t) + e^(-2t)) dt

Now, using a numerical integration method or a calculator, we can evaluate this integral, length of the curve is 2.1099

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(1 point) (Chapter 7 Section 2: Practice Problem 6, Randomized) 5 x Evaluate I dx e6r The ideal selection of parts is f(x) = and g'(x) dx With these choices, we can reconstruct a new integral expression; fill in the integral term (note that it is still signed as negative, so enter your term appropriately): becomes: 5 x - dx = f(x)g(x)|* - [³ d.x e6x Enter the final value of the integral in exact form (no decimals): 5 X [² dx = e6x

Answers

The final value of the integral is: ∫[5x - x^2 * e^(6x)] dx = (5/2)x^3 - (5/8)x^4 + C, where C is the constant of integration.

To evaluate the integral ∫[5x - f(x)g'(x)] dx using integration by parts, we need to choose appropriate functions for f(x) and g'(x) so that the integral simplifies.

Let's choose:

f(x) = x^2

g'(x) = e^(6x)

Now, we can use the integration by parts formula:

∫[u dv] = uv - ∫[v du]

Applying this formula to our integral, we have:

∫[5x - f(x)g'(x)] dx = ∫[5x - x^2 * e^(6x)] dx

Let's calculate the individual terms using the integration by parts formula:

u = 5x            (taking the antiderivative of u gives us: u = (5/2)x^2)

dv = dx           (taking the antiderivative of dv gives us: v = x)

Now, we can apply the formula to evaluate the integral:

∫[5x - x^2 * e^(6x)] dx = (5/2)x^2 * x - ∫[x * (5/2)x^2] dx

                        = (5/2)x^3 - (5/2) ∫[x^3] dx

                        = (5/2)x^3 - (5/2) * (1/4)x^4 + C

∴ ∫[5x - x^2 * e^(6x)] dx = (5/2)x^3 - (5/8)x^4 + C

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Find the absolute maximum and minimum values of each function over the indicated interval, and indicate the x-values at which they occur f(x)=x²-x²-8x+8: [-2,0]
The absolute maximum value is at x =

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The function f(x) = x² - x² - 8x + 8 on the interval [-2, 0] does not have an absolute maximum value. It is an open interval, and the function is decreasing throughout the interval. However, it does have an absolute minimum value at x = -2.

To find the absolute maximum and minimum values of the function f(x) = x² - x² - 8x + 8 on the interval [-2, 0], we need to evaluate the function at the critical points and endpoints within the interval.

The critical points of the function occur where the derivative is equal to zero or does not exist. However, since the function is a quadratic function, it does not have any critical points.

Next, we evaluate the function at the endpoints of the interval:

f(-2) = (-2)² - (-2)² - 8(-2) + 8 = 4 - 4 + 16 + 8 = 24

f(0) = (0)² - (0)² - 8(0) + 8 = 0 - 0 + 0 + 8 = 8

Therefore, the absolute minimum value of the function f(x) on the interval [-2, 0] is 24, which occurs at x = -2.

However, the function does not have an absolute maximum value within the given interval because it is an open interval and the function is decreasing throughout the interval.

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Find the length of the curve. x ya 20cm) 555* y= 2 In sin 2 ग

Answers

The length of the curve is approximately 2.316 units.

To find the length of the curve, we use the formula for arc length:

[tex]\[ L = \int_{a}^{b} \sqrt{1 + \left(\frac{dy}{dx}\right)^2} \, dx \][/tex]

First, we need to find [tex]\(\frac{dy}{dx}\)[/tex] by taking the derivative of [tex]\(y\)[/tex] with respect to [tex]\(x\)[/tex]:

[tex]\[ \frac{dy}{dx} = 2 \cdot \frac{1}{\sin{\left(\frac{x}{2}\right)}} \cdot \frac{1}{2} \cdot \cos{\left(\frac{x}{2}\right)} = \frac{\cos{\left(\frac{x}{2}\right)}}{\sin{\left(\frac{x}{2}\right)}} \][/tex]

Now we can substitute this into the formula for arc length:

[tex]\[ L = \int_{\frac{\pi}{5}}^{\pi} \sqrt{1 + \left(\frac{\cos{\left(\frac{x}{2}\right)}}{\sin{\left(\frac{x}{2}\right)}}\right)^2} \, dx \][/tex]

Simplifying the integrand:

[tex]\[ L = \int_{\frac{\pi}{5}}^{\pi} \sqrt{1 + \frac{\cos^2{\left(\frac{x}{2}\right)}}{\sin^2{\left(\frac{x}{2}\right)}}} \, dx = \int_{\frac{\pi}{5}}^{\pi} \sqrt{\frac{\sin^2{\left(\frac{x}{2}\right)} + \cos^2{\left(\frac{x}{2}\right)}}{\sin^2{\left(\frac{x}{2}\right)}}} \, dx \][/tex]

[tex]\[ L = \int_{\frac{\pi}{5}}^{\pi} \frac{1}{\sin{\left(\frac{x}{2}\right)}} \, dx \][/tex]

To solve this integral, we can use a trigonometric substitution. Let [tex]\( u = \sin{\left(\frac{x}{2}\right)} \), then \( du = \frac{1}{2} \cos{\left(\frac{x}{2}\right)} \, dx \)[/tex].

When [tex]\( x = \frac{\pi}{5} \)[/tex], [tex]\( u = \sin{\left(\frac{\pi}{10}\right)} \)[/tex], and when [tex]\( x = \pi \)[/tex], [tex]\( u = \sin{\left(\frac{\pi}{2}\right)} = 1 \)[/tex].

The integral becomes:

[tex]\[ L = 2 \int_{\sin{\left(\frac{\pi}{10}\right)}}^{1} \frac{1}{u} \, du = 2 \ln{\left|u\right|} \bigg|_{\sin{\left(\frac{\pi}{10}\right)}}^{1} = 2 \ln{\left|\sin{\left(\frac{\pi}{10}\right)}\right|} - 2 \ln{1} = 2 \ln{\left|\sin{\left(\frac{\pi}{10}\right)}\right|} \][/tex]

Using a calculator, the length of the curve is approximately 2.316 units.

The complete question must be:

Find the length of the curve.

[tex]y=2\ln{\left[\sin{\frac{x}{2}}\right],\ \frac{\pi}{5}}\le x\le\pi[/tex]

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true or false? in a qualitative risk assessment, if the probability is 50 percent and the impact is 90, the risk level is 45.

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The statement in a qualitative risk assessment, if the probability is 50 percent and the impact is 90, the risk level is 45 is false because the risk level is not simply the product of the probability and impact values.

How is risk level determined?

In qualitative risk assessments, the risk level is typically determined by assigning qualitative descriptors or ratings to the probability and impact factors. These descriptors may vary depending on the specific risk assessment methodology or organization. Multiplying the probability and impact values together does not yield a meaningful or standardized risk level.

To obtain a risk level, qualitative assessments often use predefined scales or matrices that map the probability and impact ratings to corresponding risk levels.

These scales or matrices consider the overall severity of the risk based on the combination of probability and impact. Therefore, it is not accurate to assume that a risk level of 45 can be obtained by multiplying a probability of 50 percent by an impact of 90.

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In a theatre, two attached spotlights make an angle of 100'. One shines on Ben, who is 30.6 feet away. The other shines on Mariko, who is 41.1 feet away. How far apart are Ben and Mariko?

Answers

By using trigonometric principles, we can determine the distance between Ben and Mariko in the theater.

To find the distance between Ben and Mariko, we can use the law of cosines. Let's consider the triangle formed by the spotlights and the line connecting Ben and Mariko. The angle between the spotlights is 100', and the distances from each spotlight to Ben and Mariko are given.

Using the law of cosines, we have the equation:

c^2 = a^2 + b^2 - 2ab*cos(C)

Where c represents the distance between Ben and Mariko, a is the distance from one spotlight to Ben, b is the distance from the other spotlight to Mariko, and C is the angle between a and b.

Plugging in the values, we get:

c^2 = (30.6)^2 + (41.1)^2 - 2 * 30.6 * 41.1 * cos(100')

Evaluating the right side of the equation, we find:

c^2 ≈ 939.75

Taking the square root of both sides, we obtain:

c ≈ √939.75

Calculating this value, we find that the distance between Ben and Mariko is approximately 54.9 feet.

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How to do ascending order with the symbols





Best answer will be marked the brainliest

Answers

Answer:

Less than symbol (<)

Step-by-step explanation:

For example:

A set of numbers that are in ascending order

1<2<3<4<5<6<7<8<9<10

The less than symbol is used to denote the increasing order.

Hope this helps

reese sold half of his comic books and then bought 8 more. he now has 15. how many did he begin with?

Answers

Reese began with 14 comic books before he sold half of them and then bought 8 more.

To solve this problem, we can start by setting up an equation. Let's say that Reese began with x number of comic books. He sold half of them, which means he now has x/2 comic books. He then bought 8 more, which brings his total to x/2 + 8. We know that this total is equal to 15, so we can set up the equation:

x/2 + 8 = 15

To solve for x, we can first subtract 8 from both sides:

x/2 = 7

Then, we can multiply both sides by 2 to isolate x:

x = 14

Therefore, Reese began with 14 comic books.

The problem requires us to find the initial number of comic books Reese had. We can do that by setting up an equation based on the information given in the problem. We know that he sold half of his comic books, which means he had x/2 left after the sale. He then bought 8 more, which brings his total to x/2 + 8. We can set this equal to 15, the final number of comic books he has. Solving for x gives us the initial number of comic books Reese had.
This problem is a good example of how we can use algebra to solve real-world problems.

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< Let sin (a)=(-4/5) and let a be in quadrant III And sin (2a), calza), and tan (2a)

Answers

Given sin(a) = -4/5 and a is in quadrant III, we have sin(2a) = 24/25, cos(a) = -3/5, and tan(2a) = 8/9. sin(a) = -4/5, we know that the y-coordinate is -4 and the radius is 5.

Given that sin(a) = -4/5 and a is in quadrant III, we can find the values of sin(2a), cos(a), and tan(2a). In quadrant III, both the x-coordinate and y-coordinate of a point on the unit circle are negative. Since sin(a) = -4/5, we know that the y-coordinate is -4 and the radius is 5.

By using the Pythagorean theorem, we can find the x-coordinate, which is -3. Therefore, cos(a) = -3/5. To find sin(2a), we can use the double-angle identity for sine: sin(2a) = 2sin(a)cos(a).

Plugging in the values of sin(a) and cos(a), we have sin(2a) = 2*(-4/5)*(-3/5) = 24/25. For tan(2a), we can use the identity tan(2a) = (2tan(a))/(1 - tan^2(a)). Since tan(a) = sin(a)/cos(a), we can substitute the values of sin(a) and cos(a) to find tan(2a). After calculation, we get tan(2a) = (2*(-4/5))/(1 - (-4/5)^2) = 8/9.

In summary, given sin(a) = -4/5 and a is in quadrant III, we have sin(2a) = 24/25, cos(a) = -3/5, and tan(2a) = 8/9.

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                                           "Complete question"

< Let sin (a)=(-4/5) and let a be in quadrant III And sin (2a), calza), and tan (2a)

Question 1 (20 points): a) For which value of the number p the following series is convergent? Explain in detail. 10 nlwin) b) Can you find a number a so that the following series is convergent? Expla

Answers

To determine for which value of the number p the series[tex]Σ(10/n^p)[/tex]is convergent, we need to apply the p-series test.

The p-series test states that [tex]Σ(1/n^p)[/tex] converges if and only if[tex]p > 1.[/tex]

In our case, we have [tex]Σ(10/n^p),[/tex] so we can rewrite it as [tex]Σ(10 * (1/n^p)).[/tex]

Since 10 is a constant factor, it does not affect the convergence or divergence of the series.

Therefore, the series [tex]Σ(10/n^p)[/tex]will converge if and only i[tex]f p > 1.[/tex]

(b) To determine if there exists a number a such that the series[tex]Σ(a^n)[/tex]is convergent, we need to consider the value of a.

The series[tex]Σ(a^n)[/tex] is a geometric series, which converges if and only if the absolute value of the common ratio is less than 1.

In our case, the common ratio is a.

Therefore, the series [tex]Σ(a^n)[/tex] will converge if and only if |a| [tex]< 1.[/tex]

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Convert the following in index form of 2: (a) 64 ​

Answers

Answer:

64 in index form is : 2^6

Step-by-step explanation:

That is :

64 = 2^6

64 = 2 x 2 x 2 x 2 x 2 x 2

64 = 64

(1 point) Let F = 5xi + 5yj and let n be the outward unit normal vector to the positively oriented circle x2 + y2 - = 1. Compute the flux integral ScFinds.

Answers

The flux integral ∬S F · dS is equal to 5π/2.

To compute the flux integral of the vector field F = 5xi + 5yj across the surface S defined by the equation[tex]x^2 + y^2[/tex] = 1, we need to evaluate the surface integral of the dot product between F and the outward unit normal vector n.

First, let's find the unit normal vector n to the surface S. The surface S represents a unit circle centered at the origin, so the normal vector at any point on the circle is simply given by the unit vector pointing outward from the origin. Therefore, n = (x, y) / ||(x, y)|| = (x, y) / 1 = (x, y).

Now, we can compute the flux integral:

∬S F · dS = ∬S (5xi + 5yj) · (x, y) dA,

where dS represents the infinitesimal surface element and dA represents the infinitesimal area on the surface.

We can express dS as dS = (dx, dy) and rewrite the integral as:

∬S F · dS = ∬S[tex](5x^2 + 5y^2) dA.[/tex]

Since we are integrating over the unit circle, we can use polar coordinates to simplify the integral. The limits of integration for r are from 0 to 1, and the limits of integration for θ are from 0 to 2π.

Using the conversion from Cartesian to polar coordinates (x = rcosθ, y = rsinθ), the integral becomes:

∬S[tex](5x^2 + 5y^2) d[/tex]A = ∫[0,2π] ∫[0,1] (5r^2) r dr dθ.

Simplifying and evaluating the integral:

∫[0,2π] ∫[0,1] (5r^3) dr dθ = 5 ∫[0,2π] [(1/4)r^4] from 0 to 1 dθ.

= 5 ∫[0,2π] (1/4) dθ = 5 (1/4) [θ] from 0 to 2π.

= 5 (1/4) (2π - 0) = 5π/2.

Therefore, the flux integral ∬S F · dS is equal to 5π/2.

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4. A particle moves according to the law of motion s(t) = t3 - t2 -6t (a) Find the velocity of the particle at t=2 (b) Find the acceleration of the particle at t=2 (8 pts

Answers

The required answers are a) The velocity of the particle at t=2 is  2 units per time.  b) The acceleration of the particle at t=2 is 10 units per time.

To find the velocity and acceleration of a particle at a given time, we need to differentiate the position function with respect to time.

Given the position function: [tex]s(t) = t^3 - t^2 - 6t[/tex]

(a) Velocity of the particle at t = 2:

To find the velocity, we differentiate the position function s(t) with respect to time (t):

v(t) = s'(t)

Taking the derivative of s(t), we have:

[tex]v(t) = 3t^2 - 2t - 6[/tex]

To find the velocity at t = 2, we substitute t = 2 into the velocity function:

[tex]v(2) = 3(2)^2 - 2(2) - 6\\ = 12 - 4 - 6\\ = 2[/tex]

Therefore, the velocity of the particle at t = 2 is 2 units per time (or 2 units per whatever time unit is used).

(b) Acceleration of the particle at t = 2:

To find the acceleration, we differentiate the velocity function v(t) with respect to time (t):

a(t) = v'(t)

Taking the derivative of v(t), we have:

a(t) = 6t - 2

To find the acceleration at t = 2, we substitute t = 2 into the acceleration function:

a(2) = 6(2) - 2

    = 12 - 2

    = 10

Therefore, the acceleration of the particle at t = 2 is 10 units per time (or 10 units per whatever time unit is used).

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let φ(u,v)=(3u 3v,8u 6v). use the jacobian to determine the area of φ(r) for:

Answers

The area of the image φ(r) can be determined using the Jacobian of the transformation φ(u, v). The area of φ(r) is zero

The Jacobian matrix for φ(u, v) is given by:

J(u, v) = [[∂(3u)/∂u, ∂(3u)/∂v], [∂(8u)/∂u, ∂(8u)/∂v]] = [[3, 0], [8, 0]]

The Jacobian determinant is calculated as the determinant of the Jacobian matrix:

|J(u, v)| = |[[3, 0], [8, 0]]| = 3 * 0 - 0 * 8 = 0

Since the Jacobian determinant is zero, it indicates that the transformation φ(u, v) degenerates into a line or a point. This means that the image of φ(r) has zero area, as it collapses onto a lower-dimensional object. In other words, the transformation does not preserve the area of the region r.

Hence, the area of φ(r) is zero, implying that the transformation φ(u, v) in this case causes a loss of dimensionality, resulting in a line or point rather than a region with non-zero area.

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Let In+1 = 1.15xn + 10 be a linear DDS. a) Calculate the equilibrium value for this DDS. Round to 2 decimal places as needed. 2e = b) Determine the stability of the equilibrium and select the reason for your answer. The equilibrium of this system is because the slope is positive. O the slope in absolute value is greater than 1. the slope is negative. O the slope in absolute value is less than 1. c) Suppose the initial value is Xo = 14. Write the explicit solution for this linear DDS. d) Find 33 using either the recursive equation or the explicit solution. Round your final answer to two decimal places. 23

Answers

A)The equilibrium value for this DDS is approximately -66.67.

B)The slope in absolute value is greater than 1.

C)Using the initial condition I0 = 14, I1 = 1.15 × 14 + 10,I2 = 1.15 × I1 + 10,I3 = 1.15 × I2 + 10 And so on.

D)The value of I33 is approximately 1696.98.

a) To find the equilibrium value the equation In+1 = 1.15xn + 10 equal to xn. This means that at equilibrium, the value in the next iteration the same as the current value.

1.15xn + 10 = xn

Simplifying the equation:

0.15xn = -10

xn = -10 / 0.15

xn ≈ -66.67

b) To determine the stability of the equilibrium, to examine the slope of the DDS equation the slope is 1.15. The stability of the equilibrium depends on the magnitude of the slope.

c) The explicit solution for the linear DDS with initial value Xo = 14 found by iterating the equation:

In = 1.15In-1 + 10

Using the initial condition I0 = 14, the subsequent values:

I1 = 1.15 ×14 + 10

I2 = 1.15 × I1 + 10

I3 = 1.15 × I2 + 10

And so on.

d) To find I33, use either the recursive equation or the explicit solution. Since the explicit solution is not provided,  the recursive equation:

In = 1.15In-1 + 10

Starting with I0 = 14, calculate I33 iteratively:

I1 = 1.15 × 14 + 10

I2 = 1.15 ×I1 + 10

I3 = 1.15 × I2 + 10

I33 = 1.15 × I32 + 10

Using this approach, calculate I33 to two decimal places:

I33 =1696.98

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what is the number if k% of it is 2a?

Answers

The number, x, is equal to (2a) × (100/k).

Let's denote the number as "x." We are given that k% of x is equal to 2a.

To find the number, we need to translate the given information into an equation. The phrase "k% of x" can be expressed as (k/100) × x.

According to the given information, (k/100) × x is equal to 2a:

(k/100) × x = 2a.

To solve for x, we can isolate it on one side of the equation by dividing both sides by (k/100):

x = (2a) / (k/100).

To simplify further, we can multiply by the reciprocal of (k/100), which is (100/k):

x = (2a) × (100/k).

Therefore, the number, x, is equal to (2a) × (100/k).

In summary, if k% of a number is equal to 2a, the number itself can be calculated as (2a) × (100/k).

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6. (8 points) A manufacturer estimates that the marginal cost of producing q units of a certain commodity is P'(q) =q²-10q+60 dollars per unit. (a) Find the Total cost function, given the initial cost of the product is $1000 (b) What is the total cost of producing 9 units

Answers

A) The total cost of producing 9 units is $1216 B) the total cost of producing 9 units is $1216. To find the total cost function, we need to integrate marginal cost function.

[tex]∫P'(q) dq = ∫(q^2 - 10q + 60) dq[/tex] Integrating term by term, we get: C(q) = (1/3)q^3 - (10/2)q^2 + 60q + C where C is the constant of integration. Since the initial cost of the product is $1000, we can use this information to determine the value of the constant of integration,

C. [tex]C(0) = (1/3)(0)^3 - (10/2)(0)^2 + 60(0) + C = 1000[/tex]

C = 1000

Therefore, the total cost function is:

[tex]C(q) = (1/3)q^3 - 5q^2 + 60q + 1000[/tex] To find the total cost of producing 9 units, we substitute q = 9 into the total cost function: [tex]C(9) = (1/3)(9)^3 - 5(9)^2 + 60(9) + 1000 = 243/3 - 405 + 540 + 1000 = 81 - 405 + 540 + 1000[/tex]= 1216 dollars Therefore, the total cost of producing 9 units is $1216.

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5^8 x 5^-2 =
a. 5^10
b. 5^6
c. 6^5
d. 5^-16

Answers

5^6

• Calculate the answer as a whole number

• Then calculate whichever answer you think it is

• if it's the same whole number, then it is correct

• If it isn't, try again with another one of the answers

Suppose logk p = 11 and logk q = -7, where k, p, q are a) log (p²q-8)= b) logk (wp-5q³) = (c) Express in terms of p and q: k²3 one correct answer)

Answers

The correct answer is 1728 in terms of p and q: k²3 supposing logk p = 11 and logk q = -7, where k, p, q. We will use the laws of logarithms.

a) The value of log (p²q-8) is -6.

To solve for log (p²q-8), we can use the laws of logarithms:

p²q-8 as (pq²)/2^3

log (p²q-8) = log [(pq²)/2^3]

= log (pq²) - log 2^3

= log p + 2log q - 3

log (p²q-8) = 11 + 2(-7) - 3 (Substituting the values)

= -6

b) The value of logk (wp-5q³) is (1/11) * log w + (1/-7) * log (p-5q³).

To solve for logk (wp-5q³),

Using the property that log ab = log a + log b:

logk (wp-5q³) = logk w + logk (p-5q³)

logk w = (1/logp k) * log w  (first equation)

logk (p-5q³) = (1/logp k) * log (p-5q³) (second equation)

Substituting the given values of logk p and logk q, we get:

logk w = (1/11) * log w

logk (p-5q³) = (1/-7) * log (p-5q³)

logk (wp-5q³) = (1/11) * log w + (1/-7) * log (p-5q³)

c) To express k²3 in terms of p and q, we need to eliminate k from the given expression. Using the property that (loga b)^c = loga (b^c), we can write:

k²3 = (k^2)^3

= (logp kp)^3

= (logp k + logp p)^3

= (logp k + 1)^3

k²3 = (11 + 1)^3 (Substitution)

= 12^3

= 1728

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What were the Great Purges?A Mass executions of those who opposed or were accused of opposing totalitarian rule in the Soviet UnionB Removal of large numbers of Jewish citizens out of the Soviet UnionC The mass migration of almost 10 million people out of the Soviet Union after World War ID The movement by the Soviet people to remove anything anti-Russian from the country Consider the function: f(x) = 4x + 4 Step 2 of 2: Evaluatef"6f"(3), and f"(2), if they exist. If they do not exist, select "Does Not Exist". Answer m Ta Selecting a radio button will replace the enter Cul de las siguientes aseveraciones de la economa de P. R. Es falsa?Select one:a. Existe fuerza obrera con gran capacidad empresarial y tecnolgica. B. En P. R. , la tasa de desempleo es mayor que en EU. C. Los individuos dependen ms de las transferencias federales en P. R. Que en E. U. , por la pobreza mayor. D. La economa de P. R. Ha logrado un alto grado de autosuficiencia (es poco dependiente). aristotle introduced the concept that effective communication is comprised of The electromagnetic spectrum of light has many different parts named depending on their frequency and wavelength.The shorter the wavelength of light , the_____________________ the frequency , and ___________. Which entity has jurisdiction over health care coverage providers?-Department of Insurance-HiCap-MRMIP-California Life and Health Guarantee Association 4. Given initial value problem y" + 400y = 39 cos 19t y(O) = 2 & 7(0) = 0 (a) Solve the initial value problem. } (b) Rewrite the initial value problem solution in the format - Aco (1) co() COS 4. For the function f(x) = x4 - 6x2 - 16, find the points of inflection and determine the concavity. in a research study aimed to measure the most effective way to study, students are given a test on the material they reviewed. A group of ne15 was asked to take an exam after they read lecture summaries and after they watched and listened to lecture summaries. The researcher noticed that once a student took the test the first time, they were able to get through the exam faster the second time. What should the researcher have done to avoid this problem? a. Give the test at different hours of the day b. Create different test for the students c. Give the test in different languages d. Switch the order of study methods for the participants before the test can someone please help me on these chemistry true or false ? ill give brainliest Theorem: If n is an odd integer, and m is an odd integer then n+m is even. If I want to prove this by contradiction, which of the following is my set of premises a. n is odd, mis odd, n+m is odd b. n is odd, mis odd c. n is even or m is even d. n+m is odd early dixieland jazz frequently featured the tenor saxophone a psychotherapist who believes that deviant behavior results from faulty learning probably employs which of the following types of therapy? group of answer choices cognitive behavioral biomedical sociological psychoanalytic Given the mCAE = 110, mCAD =70 and DF=4x, BE = 6x - 20 then BE = which task is typically the responsibility of a rental agent division x makes a part that it sells to customers outside of the company. data concerning this part appear below: selling price to outside customers $ 50 variable cost per unit $ 30 total fixed costs $ 400,000 capacity in units 25,000 division y of the same company would like to use the part manufactured by division x in one of its products. division y currently purchases a similar part made by an outside company for $49 per unit and would substitute the part made by division x. division y requires 5,000 units of the part each period. division x has sufficient excess capacity to handle all of division y's needs without any increase in fixed costs and without cutting into outside sales. what is the lowest transfer price division x will accept? multiple choice $50 $49 $46 $30 $20 In Part 2, Chapter 9, the Partys ability to change enemies in the middle of Hate Week mainly shows that ______ the expression (2011 prices 2010 prices) 100 is equal to: What are the solutions of the equation 2.0 - 1000 a. 1,-10 b. 0,-10 c.0 / 10 d. 0,10 Please show all work and no use of a calculatorplease, thank you.1. Consider the parallelogram with vertices A = (1,1,2), B = (0,2,3), C = (2,c, 1), and D=(-1,c+3,4), where c is a real-valued constant. (a) (5 points) Use the cross product to find the area of parall