Teresa's result of 95 heads is slightly higher than what she would have expected, it is still reasonably close to the expected value based on the theoretical probability of getting a head when flipping a fair coin.
Teresa's result of 95 heads in 150 coin flips is slightly higher than what she would have expected if the theoretical possibility of getting a head when flipping a coin was exactly 1/2.
When flipping a fair coin, the probability of getting a head is indeed 1/2, and the probability of getting a tail is also 1/2. Therefore, if we assume that the coin is fair and unbiased, we can use the concept of expected value to determine what Teresa would have expected.
The expected value of a single coin flip can be calculated as follows:
Expected value = (Probability of an outcome) * (Value of the outcome)
In this case, the probability of getting a head is 1/2, and the value of getting a head is 1 (since we are interested in the number of heads). Therefore, the expected value of a single coin flip is:
Expected value = (1/2) * 1 = 1/2
To determine what Teresa would have expected in 150 coin flips, we can multiply the expected value of a single coin flip by the number of flips:
Expected number of heads = (Expected value) * (Number of coin flips)
Expected number of heads = (1/2) * 150 = 75
So, if Teresa had flipped the coin 150 times and the coin was fair, she would have expected to get approximately 75 heads.
However, Teresa obtained 95 heads in her actual experiment. This result is slightly higher than the expected value of 75 heads. It's important to note that, due to the inherent randomness of coin flips, there will always be some variation between the expected and actual results. Flipping a coin 150 times is a relatively small sample size, and it is within the realm of possibility to deviate from the expected outcome.
Therefore, while Teresa's result of 95 heads is slightly higher than what she would have expected, it is still reasonably close to the expected value based on the theoretical probability of getting a head when flipping a fair coin.
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Line r has a slope of -6. Line s is parallel to line r. What is the slope of line s?
Thank you.
Answer:
-6
Step-by-step explanation:
Because two lines that are parallel have the same slope
A ballroom dance couple has learned 8 different routines and is going to perform 6 of them at a local competition. How many different ways could they arrange their performance?
The ballroom dance couple can arrange their performance in 28 different ways by selecting 6 routines out of the 8 they have learned.
To solve this problem
The idea of combinations can be used.
The number of ways to select k items from a set of n items is given by the formula for combinations:
C(n, k) = n! / (k! * (n - k)!)
In this case, n = 8 (the total number of routines they have learned) and k = 6 (the number of routines they will perform).
Using the formula, we can calculate:
C(8, 6) = 8! / (6! * (8 - 6)!)
= 8! / (6! * 2!)
The factorial function is represented in this case by the exclamation symbol (!).
The sum of all positive integers from 1 to n is the factorial of the number n.
Calculating the factorials involved:
8! = 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1 = 40,320
6! = 6 * 5 * 4 * 3 * 2 * 1 = 720
2! = 2 * 1 = 2
Plugging in these values:
C(8, 6) = 40,320 / (720 * 2)
= 40,320 / 1,440
= 28
Therefore, the ballroom dance couple can arrange their performance in 28 different ways by selecting 6 routines out of the 8 they have learned.
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A jogger running around a rectangular park takes a shortcut back to his car by running 53 meters from one corner to the opposite corner. If the park is 45 meters long, what is the width?
Answer:
28 meters Aprox
Step-by-step explanation:
To find the width of the rectangular park, we can use the Pythagorean theorem. The diagonal running from one corner to the opposite corner forms a right triangle with the length and width of the park.
Given:
Length of the park (L) = 45 meters
Diagonal distance (d) = 53 meters
Using the Pythagorean theorem:
d² = L² + W²
(53 meters)² = (45 meters)² + W²
2809 = 2025 + W²
W² = 2809 - 2025
W² = 784
Taking the square root of both sides:
W ≈ √784
W ≈ 28
Therefore, the width of the rectangular park is approximately 28 meters.
100 Points! Geometry question. Photo attached. Determine whether each pair or figures is similar. If so, write the similarity statement and scale factor. If not, explain your reasoning. Please show as much work as possible. Thank you!
The figures are similar because the ratio of segment BC to segment EF is equal to the of segment AB to segment DE.
The scale factor is equal to 3/2.
What are the properties of similar triangles?In Mathematics and Geometry, two (2) triangles are said to be similar when the ratio of their corresponding side lengths are equal and their corresponding angles are congruent.
Additionally, the lengths of corresponding sides or corresponding side lengths are proportional to the lengths of corresponding altitudes when two (2) triangles are similar.
Based on the side, angle, side (SAS) similarity theorem, we can logically deduce the following:
Scale factor = BC/EF = AB/DE
Scale factor = 9/6 = 6/4
Scale factor = 3/2 = 3/2 (similar)
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Describe the Transformations for 4 and 5
If h(x) = f(–x), this is saying that your graph will be reflected over the y-axis. In other words, the x-values of every point on the graph of y=f(x) will be switched to the opposite sign. The graph will be flipped over sideways.
For example, if (1,-4) is a point on y=f(x), then y=h(x) will have (–1,-4) on it.
If h(x) = –f(x), this is saying that your graph will be reflected over the x-axis. In other words, the y-values of every point on the graph of y=f(x) will be switched to the opposite sign. The graph will be flipped upside-down.
For example, if (1,–4) is a point on y=f(x), then y=h(x) will have (1,4) on it.
While you are given the equation for f(x) in each exercise, the function f(x) does not impact the transformation at all. What is said above is true for all functions.
If you want to graph them, then for 4:
f(x) = -3 - x
h(x) = f(-x) = -3 + x
For #5:
f(x) = 1/3 x + 1
h(x) = -f(x) = -1/3 x - 1
which of the following is the slope of the line with equation -7x=6+3y
Answer:
Slope = -7/3
Step-by-step explanation:
-7x = 6 + 3y is in the standard form of a line, whose general equation is
Ax = C + By (it's sometimes written in terms of C and is Ax + By = C, but in this problem, it's written in terms of Ax).
We can find the slope of the line by converting from standard form to slope-intercept form, whose general equation is y = mx + b, where
m is the slope,and b is the y-intercept.Step 1: Subtract 6 from both sides:
(-7x = 6 + 3y) - 6
-7x - 6 = 3y
Step 2: Divide both sides by 3 to isolate y:
(-7x - 6 = 3y) / 3
-7/3x - 2 = y
Thus, the slope of the line is -7/3
Answer: Therefore the slope is [tex]-\frac{7}{3}[/tex].
Step-by-step explanation:
We can rewrite the equation -7x=6+3y in slope-intercept form y = mx + b, where the m is the slope of the line, and b is the y-intercept.
-7x = 6 + 3y
-6 -6
-7x - 6 = 3y
[tex]\frac{-7x}{3}-\frac{6}{3} =\frac{3y}{3}[/tex]
[tex]\frac{-7}{3}x-2 =y[/tex]
Therefore the slope is [tex]-\frac{7}{3}[/tex].
Use the formula ω = (θ/t) to find the value of the missing variable. Give an exact answer unless otherwise indicated. ω = (π/8) radian per min, t = 11 min
Answer:
The missing variable θ is equal to (11π)/8.
Step-by-step explanation:
Given:
ω = π/8 radian per min
t = 11 min
Step 1: Identify the formula and the missing variable.
The formula is ω = (θ/t), and we are trying to find the value of θ.
Step 2: Rearrange the formula to solve for the missing variable.
To isolate θ, we can multiply both sides of the equation by t:
ω * t = θ
Step 3: Substitute the given values.
Substituting the given values into the rearranged formula, we have:
θ = (π/8) * 11
Step 4: Simplify the expression.
To multiply fractions, we multiply the numerators and multiply the denominators:
θ = (π * 11) / (8 * 1)
θ = (11π) / 8
Step 5: Finalize the answer.
The value of the missing variable θ is (11π)/8. This is the exact answer unless otherwise indicated.
Therefore, the step-by-step process shows that the missing variable θ is equal to (11π)/8.
Solve for z. z² = 36 Enter your answer in the box. z =
Answer:
Step-by-step explanation:
z=6
Pleaseseee help
Two one-step equations
Two equations that contains fractions
One equation with distributive property
One equation with decimals
One real-world problem that is solved by an equation
Remember that each equation must include at least one variable
please help
The road trip will take approximately 5 hours.
Two one-step equations:
a) 2x + 5 = 13
In this equation, the variable 'x' represents an unknown number. By performing one step of subtraction, we can find the value of 'x' that makes the equation true.
The solution is x = 4.
b) 3y - 7 = 16
Similar to the first equation, 'y' represents an unknown number.
By adding 7 to both sides of the equation, we can isolate the variable and solve for 'y.'
The solution is y = 7.
Two equations with fractions:
a) (1/3)x + 2 = 5
Here, the variable 'x' is multiplied by a fraction.
To isolate 'x,' we can subtract 2 from both sides and then multiply both sides by the reciprocal of 1/3, which is 3/1.
The solution is x = 9.
b) (2/5)y - 3 = 1
In this equation, 'y' is multiplied by a fraction.
We can isolate 'y' by adding 3 to both sides and then multiplying both sides by the reciprocal of 2/5, which is 5/2.
The solution is y = 4.
One equation with the distributive property:
a) 2(x + 3) = 10
This equation demonstrates the distributive property.
By applying it, we multiply 2 by both x and 3, resulting in 2x + 6 = 10.
We can then solve for 'x' by subtracting 6 from both sides.
The solution is x = 2.
One equation with decimals:
a) 0.4x + 0.8 = 1.6
In this equation, 'x' is multiplied by a decimal.
To isolate 'x,' we subtract 0.8 from both sides and then divide both sides by 0.4.
The solution is x = 2.
Real-world problem:
Imagine you're planning a road trip.
The distance you'll be traveling is 250 miles, and your car's average speed is 50 miles per hour.
You want to determine how long the trip will take.
Let 't' represent the time in hours it will take to complete the trip.
The equation that represents this situation is:
50t = 250
By dividing both sides of the equation by 50, we find that t = 5.
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Your professor has offered to give you $100, starting next year, and after that growing at 3% for the next 20 years. You would like to calculate the value of this offer by calculating how much money you would need to deposit in the local bank so that the account will generate the money you would need to deposit in the local bank so that the account will generate the same cash flows as he is offering you. Your local bank will guarantee a 6% annual interest rate so long as you have money in your account.
1. How much money will you need to deposit into your account today?
2. Using an excel spreadsheet, show explicitly that you can deposit this amount of money into the account, and every year withdraw what your brother has promised, leaving the account with nothing after the last withdrawal.
3. Change the bank annual interest rate from 6% to 10% what is the difference?
To calculate the amount of money needed to deposit into the account today, we can use the concept of present value. The present value represents the current value of future cash flows, taking into account the time value of money.
1. To calculate the present value of the cash flows, we can use the formula for the present value of an annuity:
PV = C * (1 - (1 + r)^(-n)) / r
Where PV is the present value, C is the cash flow per period, r is the interest rate per period, and n is the number of periods.
In this case, the cash flow per period is $100, the interest rate per period is 6% (0.06), and the number of periods is 20.
Plugging in the values into the formula:
PV = 100 * (1 - (1 + 0.06)^(-20)) / 0.06
Calculating this value gives us the amount of money needed to deposit into the account today.
2. To show explicitly using an Excel spreadsheet, you can set up a column for each year, starting from year 0 (the present year) to year 20. In the first row, enter the initial deposit amount calculated in step 1. In the subsequent rows, use a formula to calculate the value for each year by adding the interest earned and subtracting the annual withdrawal of $100. The last value in year 20 should be zero, indicating that the account will have no remaining balance after the last withdrawal.
3. If the bank's annual interest rate changes to 10%, you would need to recalculate the present value using the new interest rate. Repeat step 1 with the new interest rate of 10% (0.10) to find the updated amount of money needed to deposit into the account today. Compare this value with the previous amount calculated with a 6% interest rate to determine the difference.
Write a equation to calculate d for any star
The required equation to find the distance of any star from the Sun is d = 1/ tan [tex]\theta[/tex].
Given that, the astronomer is finding the distance(d) of star to the sun in astronomical unit (AU) and tan [tex]\theta[/tex] = 0.000001389.
To find the equation by using the trigonometric function that is
tan a = perpendicular / base.
By using the data and the tangent trigonometric function, the equation is
tan [tex]\theta[/tex] = 1/d.
On simplifying gives,
Thus, d = 1/tan [tex]\theta[/tex].
Hence, the required equation to find the distance of any star from the Sun is d = 1/ tan [tex]\theta[/tex]
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Which of the following correctly order from least to greast 0.75,3/5,70%
Naomi wants to earn an A (90%) in her math class. On her first three tests, she scored 87%, 98% and 86%. What score will she need to earn on her fourth test in order to have an average of 90%?
Answer:
Naomi will need to score at least 89% on her fourth test to have an average of 90% in her math class.
Step-by-step explanation:
To find out what score Naomi needs to earn on her fourth test in order to have an average of 90%, we can set up an equation.
Let's denote the score on the fourth test as "x". Naomi has taken three tests, and their scores are 87%, 98%, and 86%. To find the average, we sum up all the scores and divide by the number of tests:
(87 + 98 + 86 + x) / 4 = 90
Now we can solve for x:
(87 + 98 + 86 + x) = 4 * 90
271 + x = 360
x = 360 - 271
x = 89
Naomi will need to score at least 89% on her fourth test to have an average of 90% in her math class.
What is the slope of the line?
In the figure, if I and K are parallel lines, what is the value of x+y in degrees?
Based on the figure, if I and K are parallel lines, the value of x+y in degrees is 62°.
The correct answer choice is option A.
What is the value of x+y in degrees?From the diagram
x + 149° = 180° (Sum of angle on a straight line)
x = 180° - 149°
x = 31°
Also,
y = 31° (alternate angles are equal)
Therefore,
x + y = 31° + 31°
= 62°
Hence, the sum of angle x and angle y is 62°.
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carlos tiene 18 años y juan 42en cuantos años la edad de juan sera el doble de la de carlos es ese entonces
In 6 years Juan will have the double of Carlos age.
When Juan will have double of Carlos's age?The ages of each one are:
Carlos = 18 years old.
Juan = 42 years old.
In x years, they will have:
C = 18 + x
J = 42 + x
Carlos will have the double of Juan's age when:
J = 2*C
Replacing the equations we will get the linear equation:
42 + x = 2*(18 + x)
Solving for x we will get:
42 +x = 36 + 2x
Solving for x:
42 - 36 = 2x - x
6 = x
So Juan will have the double of Carlos age in 6 years.
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Factorise and Simplify :
a) 6p - 7q/12p - 14q
b) 6x⁵ - 8x²/2x
c) 10a + 15b/5
d) p² - 6q + 8/3p - 6
guys please help! please
a) We can factor out a common factor of two from the denominator and a half from the numerator: (6p - 7q)/(12p - 14q) = (3p - 7q/2)/(6p - 7q)
b) The numerator and denominator can be factored to provide a common factor of2x²: (6x⁵ - 8x²)/(2x) = 2x³ - 4
c) A common factor of 5 may be extracted from the numerator: (10a + 15b)/5 = 2a + 3b
d) By grouping factors, we may factor the numerator: p² - 6q + 8/3p - 6 = [(p² - 6q) + 8]/[3(p - 2)] = (p - 2)(p - 4)/(p - 2) = p - 4 (where p ≠ 2)
Factorising is the process of employing brackets to represent an expression as the product of its components. We do this by eliminating any elements that are shared by all of the expression's terms. Maths. Algebra. We must eliminate any factors that are shared by each word in an expression before we can factorize it. Expanding brackets is the process's reverse.
Finding an expression's highest common factor (HCF), or the largest number or letter that each term can be split by, is necessary to ensure that it has been properly factorized. Otherwise, there will still be common factors inside the bracket, preventing the expression from being properly factorized.
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The distribution of scores on a history test is close to normal. The scores are adjusted so that the mean score is about =75
and the standard deviation is =5
. What percent of the scores fall between 65 and 75?
13.5%
27.0%
47.5%
The percentage of scores that fall between 65 and 75 is approximately [tex]2 \times 34 = 68%.[/tex]%
To determine the percentage of scores that fall between 65 and 75, we can use the properties of the normal distribution.
Mean score = 75
Standard deviation = 5
We know that the normal distribution is symmetric around the mean, and approximately 68% of the data falls within one standard deviation from the mean.
This means that about 34% of the scores fall between the mean and one standard deviation above the mean.
To calculate the percentage of scores between 65 and 75, we need to determine how many standard deviations away from the mean 65 and 75 are.
For 65:
(65 - 75) / 5 = -2
For 75:
(75 - 75) / 5 = 0
From the calculations, we can see that 65 is 2 standard deviations below the mean, and 75 is at the mean.
Since the distribution is symmetric, we can consider the percentage of scores between the mean and one standard deviation above the mean (34%) and double it to account for the scores between the mean and one standard deviation below the mean.
Therefore, the percentage of scores that fall between 65 and 75 is approximately 2 [tex]\times[/tex] 34% = 68%.
However, none of the given answer options match the calculated result. Therefore, none of the provided answer options accurately represent the percentage of scores between 65 and 75 based on the given information.
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I am so lost please help
Answer:
(a) - [tex]y=-2x+18[/tex]
(b) - [tex]y=\frac{1}{2} x-\frac{9}{2}[/tex]
Step-by-step explanation:
Given the equation of a line, which we'll call line 1, find the following.
(a) - The equation of a line, which we'll call line 2, that is parallel to line 1 and travels through the point (9,0)
(b) - The equation of a line, which we'll call line 3, that is perpendicular to line 1 and travels through the point (9,0)
Given:
[tex]3y+6x=-6[/tex]
(1) - Write the equation of line 1 in slope-intercept form
[tex]\boxed{\left\begin{array}{ccc}\text{\underline{Slope-Intercept Form:}}\\y=mx+b\\\bullet \ m \ \text{is the slope of the line}\\\bullet \ b \ \text{is the y-intercept of the line}\end{array}\right}[/tex]
[tex]3y+6x=-6\\\\\Longrightarrow 3y=-6-6x\\\\\Longrightarrow y=-\frac{6}{3} -\frac{6}{3}x \\\\\therefore \boxed{y=-2x-2}[/tex]
Thus, we can conclude the slope of line 1 is -2.
(2) - Answering part (a)
To find a line that is parallel to line 1, the slopes must be the same, -2. Use the point-slope form for a line to find the equation for line 2.
[tex]\boxed{\left\begin{array}{ccc}\text{\underline{Point-Slope Form:}}\\y-y_1=m(x-x_1)\\\bullet \ m \ \text{is the slope of the line}\\\bullet \ (x_1,y_1) \ \text{is a point the line passes through}\end{array}\right}[/tex]
[tex]y-y_1=m(x-x_1); \ \text{Recall that} \ m=-2 \ \text{and} \ (x_1,y_1)=(9,0)\\\\\Longrightarrow y-0=-2(x-9)\\\\\therefore \boxed{\boxed{ y=-2x+18}}[/tex]
Thus, the equation for line 2 is found.
(2) - Answering part (b)
To find a line that is perpendicular to line 1, the slope of line 3 must be the opposite-reciprocal of line 1's. Once again, use the point-slope form of a line to find the equation of line 3.
[tex]y-y_1=m(x-x_1); \ \text{Recall that} \ m=\frac{1}{2} \ \text{and} \ (x_1,y_1)=(9,0)\\\\\Longrightarrow y-0=\frac{1}{2}(x-9)\\\\\therefore \boxed{\boxed{ y=\frac{1}{2} x-\frac{9}{2} }}[/tex]
Thus, the equation of line 3 is found.
WILL GIVE BRAINLIEST TO THE CORRECT ANSWER!!
This scale drawing shows a enlargement in a figure.
What is the value of x?
Enter your answer in the box.
X =
Answer:
18
Step-by-step explanation:
is a 1/3 scale
6-12-?
8-16-24
simple :)
A rhombus with horizontal
diagonal length 2 centimeters
vertical diagonal length 3 centimeters.
Find the area of the rhombus-shaped keychain.
3 cm2
5 cm2
6 cm2
12 cm2
The area of the Rhombus-shaped keychain is 3 square centimeters.
The area of the rhombus-shaped keychain,
we can use the formula:
Area = (diagonal1 * diagonal2) / 2
Given that the horizontal diagonal has a length of 2 centimeters and
the vertical diagonal has a length of 3 centimeters,
we can substitute these values into the formula:
Area = (2 * 3) / 2
= 6 / 2
= 3 cm^2
Therefore, the area of the rhombus-shaped keychain is 3 square centimeters.
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100 Points! Geometry question. Photo attached. Write the equation of the parabola with the given conditions. Please show as much work as possible. Thank you!
Answer:
[tex](y - 4)^2 = -8(x - 2).[/tex]
Step-by-step explanation:
The equation of a parabola with a vertical axis of symmetry, vertex (h, k), and focus (h+a, k) is given by:
[tex](y - k)^2 = 4a(x - h)[/tex]
In this case, the vertex is (2, 4) and the focus is (0, 4).
Comparing this to the general equation, we have h=2, k=4, and h+a=0.
From h+a=0, we can solve for a:
a=-h = -2
Substituting the values of h, k, and p into the equation, we get:
[tex](y - 4)^2 = 4(-2)(x - 2)[/tex]
Simplifying further:
[tex](y - 4)^2 = -8(x - 2)[/tex]
Therefore, the parabola equation is[tex](y - 4)^2 = -8(x - 2).[/tex]
(~Q → P) ⋀ ~P
Truth Table
| P | Q | ~Q | ~Q → P | ~P | (~Q → P) ⋀ ~P |
|---|---|----|--------|----|----------------|
| T | T | F | T | F | F |
| T | F | T | T | F | F |
| F | T | F | T | T | T |
| F | F | T | F | T | F |
To construct a truth table for the logical statement (~Q → P) ⋀ ~P, we need to consider all possible truth values for the variables Q and P. The symbol "~" represents negation or "not" in logic, so ~Q denotes "not Q" and ~P denotes "not P".
In the above table, we first list all possible truth values for P and Q and then determine the truth values for ~Q, ~Q → P, and ~P based on these values. Finally, we evaluate the logical statement (~Q → P) ⋀ ~P based on the truth values for (~Q → P) and ~P to determine the overall truth value of the statement for each combination of P and Q.
The output of the above truth table shows that the statement (~Q → P) ⋀ ~P is true only in one case when P is false and Q is true. In all other cases, the statement is false. Therefore, we can infer that the statement is not always true and hence it is not a tautology. The statement is only true in one specific case where P is false and Q is true.
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The rectangle below has an area of
15
�
4
+
35
�
3
+
20
�
2
15k
4
+35k
3
+20k
2
15, k, start superscript, 4, end superscript, plus, 35, k, cubed, plus, 20, k, squared.
The width of the rectangle is equal to the greatest common monomial factor of
15
�
4
,
35
�
3
,
15k
4
,35k
3
,15, k, start superscript, 4, end superscript, comma, 35, k, cubed, comma and
20
�
2
20k
2
20, k, squared.
What is the length and width of the rectangle?
Three rectangles of different sizes make up a larger rectangle. The larger rectangle's length is labeled length. The larger rectangle's width is labeled width. The smaller rectangle on the left has fifteen k to the fourth power inside it. The smaller rectangle in the middle has thirty five k cubed inside it. The smaller rectangle on the right has twenty k squared inside it.
Three rectangles of different sizes make up a larger rectangle. The larger rectangle's length is labeled length. The larger rectangle's width is labeled width. The smaller rectangle on the left has fifteen k to the fourth power inside it. The smaller rectangle in the middle has thirty five k cubed inside it. The smaller rectangle on the right has twenty k squared inside it.
Width
=
Width=start text, W, i, d, t, h, end text, equals
Length
=
Length=start text, L, e, n, g, t, h, end text, equals
The width of the rectangle is 5k² and the length of the rectangle is 3k² + 7k + 4.
How to explain the informationThe greatest common monomial factor of 15k⁴, 35k³, and 20k² is 5k². So the width of the rectangle is 5k².
The area of the rectangle is the product of its length and width. So the length of the rectangle is the area divided by the width. The area is 15k⁴ + 35k³ + 20k² and the width is 5k². So the length is:
= (15k⁴ + 35k³ + 20k²) / (5k²)
= 3k² + 7k + 4.
Therefore, the width of the rectangle is 5k² and the length of the rectangle is 3k² + 7k + 4.
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10. Given m AC = 85%,
find m
AEC
AEC =
and m2ABC = E
A
B
The measure of angle AEC is 225 degree.
Given ABCD square then all sides are equal and all angles are of 90°
AB=BC=CD=DA
and also CDE is an equilateral triangle
CD=DE=EC and all angles are of 60°
Now, In ΔADE, ∵AD=AE ⇒ ∠DAE=∠AED
∠ADE=∠ADC-∠EDC=90°-60°=30°
By angle sum property of triangle
∠ADE+∠DAE+∠AED=180°
30°+2∠AED=180°
2∠AED=150°
∠AED=75°
and, ∠EAB = ∠DAB-∠DAE = 90°-75° = 15°
Reflex angle ∠AEC= 360°-∠AED-∠DEC
=360° - 75° -60°
=225°
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The complete and correct question is attached below:
50 Points! Multiple choice geometry question. Photo attached. Thank you!
The value of angle BCD is determined as 108⁰.
option B is the correct answer.
What is the value of angle BCD?The value of angle BCD is calculated by applying intersecting chord theorem, which states that the angle at tangent is half of the arc angle of the two intersecting chords.
Also this theory states that arc angles of intersecting secants at the center of the circle is equal to the angle formed at the center of the circle by the two intersecting chords.
arc AB = m∠ACB
m∠ACB = 72⁰
The value of angle BCD is calculated as follows;
angle BCD = 180 - 72⁰ (sum of angles in a circle)
angle BCD = 108⁰
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I need some help with this
The solution of the given expression is,
x = 1/2.
The given expression is,
[tex]36^{3x} = 216[/tex]
Since we know that,
As the name indicates, exponents are utilized in the exponential function. An exponential function, on the other hand, has a constant as its base and a variable as its exponent, but not the other way around (if a function has a variable as its base and a constant as its exponent, it is a power function, not an exponential function).
Now we can write it as,
⇒ [tex]6^{2^{3x}} = 6^3[/tex]
⇒ [tex]6^{6x}} = 6^3[/tex]
Now equating the exponents we get,
⇒ 6x = 3
⇒ x = 3/6
⇒ x = 1/2
Hence,
Solution is, x = 1/2.
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A custom cake baker charges a flat fee for each job, plus an hourly rate for the
number of hours the job takes to complete. The total amount of her bill to the customer can be expressed by 40 + 25h
where h is the hours it takes for the job.what does the coefficient of h, in the expression represent
The coefficient h in the expression means the time taken for the job to be completed in hours.
How to find the value of the coefficient in the expression?The custom cake baker charges a flat fee for each job, plus an hourly rate for the number of hours the job takes to complete. The total amount of her bill to the customer can be expressed by 40 + 25h where h is the hours it takes for the job.
Therefore, the coefficient h in the expression can be interpreted as follows:
total amount of bills = 40 + 25h
where
40 dollars is the flat fee for each job
Then the coefficient h means the hourly rate for the time taken for the job to be completed.
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The box contains some green and yellow counters. 7/4 of the box is green counters. There are 24 yellow counters . How many green counters are there?
Considering the definition of an equation and the way to solve it, there are 84 green counters in the box.
Definition of equationAn equation is the equality existing between two algebraic expressions connected through the equals sign in which one or more unknown values appear.
The solution of a equation means determining the value that satisfies it. To solve an equation, keep in mind:
When a value that is adding, when passing to the other member of the equation, it will subtract.If a value you are subtracting goes to the other side of the equation by adding.When a value you are dividing goes to another side of the equation, it will multiply whatever is on the other side.If a value is multiplying it passes to the other side of the equation, it will pass by dividing everything on the other side.Amount of green countersKnowing that:
7/9 of the box is green counters.1-7/9= 2/9 of the bok are yellow counters.There are 24 yellow counters.the equation in this case is:
2/9 × total counters on the box =24
Solving:
total counters on the box =24÷ 2/9
The first step in dividing by a fraction is to find the reciprocal (reverse the numerator and denominator) of the second fraction.
Then, the two numerators and the two denominators must be multiplied and, if necessary, the fractions are simplified.
total mountain bikes =24× 9/2= 24/1× 9/2
total mountain bikes =(24×9)/ (1×2)
total mountain bikes =216/2
total mountain bikes =108
Then, there are 108 green and yellow counters in the box.
So, the amount of green counters in the box is calculated as:
Amount of green counters= 7/9× 108
Amount of green counters= 7/9× 108
Amount of green counters= 84
Finally, there are 84 green counters in the box.
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which of the following exponential regression equations best fits the data shown below?
The exponential regression equation that best fits the data is y = 2^x.
To determine which exponential regression equation best fits the given data points (2, 4), (3, 8), (4, 16), and (5, 32), let's analyze the options for regression equations:
Option 1: y = 2^x
Option 2: y = 3^x
Option 3: y = 4^x
Option 4: y = 5^x
To find the best fit, we need to compare the predicted y-values from each equation with the actual y-values of the given data points.
The equation that produces the least amount of error or the closest predicted y-values to the actual ones will be the best fit.
Let's calculate the predicted y-values for each option using the given x-values:
Option 1: [tex]y = 2^2, 2^3, 2^4, 2^5 = 4, 8, 16, 32[/tex]
Option 2:[tex]y = 3^2, 3^3, 3^4, 3^5 = 9, 27, 81, 243[/tex]
Option 3:[tex]y = 4^2, 4^3, 4^4, 4^5 = 16, 64, 256, 1024[/tex]
Option 4:[tex]y = 5^2, 5^3, 5^4, 5^5 = 25, 125, 625, 3125[/tex]
By comparing the predicted y-values with the actual y-values of the data points, we can determine which option provides the closest fit.
Based on the given data points, we can observe that the predicted y-values from Option [tex]1 (y = 2^x)[/tex] match the actual y-values most closely.
The predicted values for Option 1 are 4, 8, 16, and 32, which exactly match the given data points.
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The complete question may be like: Consider the following data points: (2, 4), (3, 8), (4, 16), (5, 32). We need to determine which exponential regression equation best fits this data. Please provide the options for the regression equations so that I can assist you in finding the best fit.