The side length of the cube can be written as:
S = 3*∛5 centimeters.
How to find the sidelength of the cube?We know that the cube has a volume of V = 135cm³.
Now, remember that for a cube of side length S, the volume is:
V = S³
Here we can replace the volume in the equation above, we will get:
135cm³ = S³
If we apply the cube root in both sides, we will get:
∛(135 cm³) = S
∛135 cm = S
Now we can rewrite that as:
135 = 9*5
Then we can rewrite the expression:
∛135 = ∛(27*5) = ∛27*∛5 = 3*∛5
That is the sidelength of the cube.
So we have A = 3 and B = 5.
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Solve and check the following equations. Show your solution.
15.) 7x + 5 = 12x - 10
16.) 26 = 24 - x
17.) 2(6x - 7) = 10
Answer:
15. x = -3.
16. x = -2.
17 x = 2.
Step-by-step explanation:
To solve the equation 7x + 5 = 12x - 10, we want to isolate the variable x on one side of the equation. We can do this by adding or subtracting terms from both sides of the equation until we have x by itself.
First, let's simplify both sides of the equation by combining like terms:
7x + 5 = 12x - 10
-7x -7x (subtracting 7x from both sides)
5x + 5 = -10
Next, let's isolate the term with x by subtracting 5 from both sides of the equation:
5x + 5 = -10
-5 -5 (subtracting 5 from both sides)
5x = -15
Finally, let's solve for x by dividing both sides of the equation by 5:
5x = -15
x = -3
Therefore, the solution to the equation 7x + 5 = 12x - 10 is x = -3.
26 = 24 - x
-24 -24 (subtracting 24 from both sides)
2 = -x
Next, let's isolate the variable x by multiplying both sides of the equation by -1:
2 = -x
-1 -1 (multiplying both sides by -1)
-2 = x
Therefore, the solution to the equation 26 = 24 - x is x = -2.
2(6x - 7) = 10
12x - 14 = 10
Next, let's isolate the term with x by adding 14 to both sides of the equation:
12x - 14 = 10
+14 +14 (adding 14 to both sides)
12x = 24
Finally, let's solve for x by dividing both sides of the equation by 12:
12x = 24
x = 2
Therefore, the solution to the equation 2(6x - 7) = 10 is x = 2.
You have $319 of charges on your credit card. Then you charge $170 to buy Christmas presents. If your minimum payment if 6% of the balance, what will be your minimum payment?
Answer correctly and explain how you got the answer for brainliest.
Answer:
$29.34.
Step-by-step explanation:
To calculate the minimum payment, we need to find the current balance, which is the sum of the previous balance and the new charge for the Christmas presents:
Current balance = previous balance + new charge
Current balance = $319 + $170
Current balance = $489
The minimum payment is 6% of the current balance:
Minimum payment = 6% x current balance
Minimum payment = 6% x $489
Minimum payment = $29.34
Therefore, the minimum payment on the credit card would be $29.34.
Answer:
$29.34.
Step-by-step explanation:
To calculate the minimum payment, we need to find the current balance, which is the sum of the previous balance and the new charge for the Christmas presents:
Current balance = $319 + $170 = $489
Minimum payment = 6% x $489 = $29.34
The minimum payment on the credit card would be $29.34.
Hope this helped, have a GOOD DAY!!!!!
Find the value of the variable(s) in the figure.
Explain your reasoning.
(5y)⁰
(2x)°
120⁰
1080
The value of the variable(s) in the figure is 60°, explaination is given below.
How to evaluate a given mathematical expression with variables if values of the variables are known?You can simply replace those variables with the value you know of them and then operate on those values to get a final value. This is the result of that function at those values of the considered variables.
We are given that;
The variables; (5y)⁰,(2x)°,120⁰,1080
Now,
The first two expressions are both equal to 1, because any number raised to the power of 0 is always 1.
The third expression, 120°, is an angle measurement in degrees. In a triangle, the sum of the interior angles is always 180°. So, if we let x and y be the other two angles in the triangle, we have:
x + y + 120° = 180°
Simplifying this equation, we get:
x + y = 60°
Therefore, the answer of the given function will be 60°.
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perform the calculation 50°21' - 38°48'
Answer:
11° 33'
Step-by-step explanation:
[tex]21' = \left(\dfrac{21}{60}\right)^\circ = \left(\dfrac{7}{20}\right)^\circ \\50^\circ 21' = 50 \dfrac{21}{60}\; degrees\\\\38^\circ 48' = 38 \dfrac{48}{60} \;degrees[/tex]
Break
[tex]50 \dfrac{21}{60} = 49 + 1 \dfrac{21}{60}\\[/tex]
[tex]1 \dfrac{21}{60} = \dfrac{1 \times 60 + 21}{60} = \dfrac{81}{60}[/tex]
Therefore
[tex]50^\circ21' - 38^\circ48' = 49\dfrac{81}{60} - 38\dfrac{48}{60}[/tex]
Subtract the whole numbers:
49 - 38 = 11
Subtract the fractions:
[tex]\dfrac{81}{60} - \dfrac{48}{60} = \dfrac{33}{60} = 33'[/tex]
So
50°21' - 38°48' = 11° 33'
A car’s MPG went from 29 mpg to 34 mpg after a tune up. What was the percent change?
Answer:
17.24
Step-by-step explanation:
find the difference between 29 and 34. Then divide by 29 and multiply by 100. 34-29=5/29=0.1724 multiply by 100 =17.24%
Jimmy, Kimmy, and Timmy are each thinking of a prime number. The product of Jimmy's and Kimmy's prime is 34. Kimmy's and Timmy's multiple to 85. What is the sum of their 3 prime numbers
Jimmy, Kimmy, and Timmy are each thinking of a prime number. The product of Jimmy's and Kimmy's prime is 34. Kimmy's and Timmy's multiple to 85. What is the sum of their 3 prime numbers?
The sum of their 3 prime numbers is 24.
What is the sum of their 3 prime numbers?
Let's start by finding the prime numbers that Jimmy, Kimmy, and Timmy are thinking of.
We know that the product of Jimmy's and Kimmy's prime is 34. Since 34 is not a prime number, it must be the product of two prime factors.
The only way to factor 34 as a product of two primes is 2 x 17.
So we know that Jimmy's prime is either 2 or 17, and Kimmy's prime is the other one. We also know that Kimmy's and Timmy's primes multiply to 85. Again, 85 is not a prime number, so it must be the product of two prime factors.
The only way to factor 85 as a product of two primes is 5 x 17.
Therefore, we know that Timmy's prime is 5.
So the three primes are 2, 17, and 5.
The sum of these three primes is 2 + 17 + 5 = 24.
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what is the answer to 7−2(3−8x)=
Answer:
x = [tex]\frac{7}{12}[/tex]
Step-by-step explanation:
[tex]7-2(3-8x)=7-6-16x[/tex]
Add/subtract like terms
[tex]5(3-8x)=1-16x[/tex]
Distribute 5
[tex]15-40x=1-16x[/tex]
Simplify
[tex]-40x+15=-16x+1[/tex]
Add -16x to both sides
[tex]-24x+15=1[/tex]
Subtract 15 on both sides
[tex]-24x=-14[/tex]
Divide by -24
[tex]x=\frac{7}{12}[/tex]
Fatima's curtain company is making curtains for a local hotel. She wants each curtain to be 48 inches long. At the fabric store, fabric is sold by the foot. If Fatima's curtain company wants to make 62 curtains, how many feet of fabric will she need? 1 inch= foot 4 - 12
Answer:
So, Fatima's curtain company needs to purchase 248 feet of fabric to make the curtains for the local hotel.
Step-by-step explanation:
To find out how many feet of fabric Fatima's curtain company needs, we first need to calculate the total length of fabric required for all 62 curtains.
Each curtain is 48 inches long, so the total length of fabric required for one curtain is:
48 inches = (48/12) feet = 4 feet
Therefore, the total length of fabric required for 62 curtains is:
62 curtains x 4 feet/curtain = 248 feet of fabric
So, Fatima's curtain company needs to purchase 248 feet of fabric to make the curtains for the local hotel.
Find the value of y.
y
3 cm
19 cm
2 cm
y = [?] cm
Enter a decimal rounded to the nearest tenth.
The value of y is given as follows:
y = 4.3 cm.
How to obtain the value of y?The value of y is obtained applying the two secant segment theorem, which means that the following equation will hold true:
3(3 + y) = 2(2 + 9).
(a secant is a segment that crosses the circumference of the circle twice, and the product has to be equal for each).
Then we apply the distributive property to each side of the equality, and then isolate the variable y, as follows:
9 + 3y = 22
3y = 13
y = 13/3
y = 4.3.
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Which situation could be represented by the graph shown?
Allison purchased lemons for $0.75 each.
What is Equation of line?The equation of line in point-slope form passing through the points
(x₁ , y₁) and (x₂, y₂) with slope m is defined as;
⇒ y - y₁ = m (x - x₁)
Where, m = (y₂ - y₁) / (x₂ - x₁)
Given that;
The graph is showing.
Now, Two point on the line are (4, 3) and (8. 6)
Hence, Equation of line is,
⇒ y - 3 = (6 - 3) / (8 - 4) (x - 4)
⇒ y - 3 = 3/4 (x - 4)
⇒ 4 (y - 3) = 3 (x - 4)
⇒ 4y - 12 = 3x - 12
⇒ 4y = 3x
⇒ y = 3/4x
⇒ y = 0.75x
Where, y is cost and x is number of lemons.
Hence, Allison purchased lemons for $0.75 each.
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Aiden is a spice trader. He sells any amount of cumin seeds from
1
11 kilogram to
1000
10001000 kilograms. He charges
$
5
$5dollar sign, 5 for
1
11 kilogram and
$
2000
$2000dollar sign, 2000 for
1000
10001000 kilograms.
�
(
�
)
p(w)p, left parenthesis, w, right parenthesis models the price (in dollars) of
�
ww kilograms of cumin seeds in Aiden's shop.
Which number type is more appropriate for the domain of
�
pp?
Choose 1 answer:
Choose 1 answer:
(Choice A) Integers
(Choice B) Real numbers
What's the appropriate domain?
Therefore , the solution of the given problem of domain comes out to be the appropriate domain for p(w) would be [1, 1000]
Explain a domain.The domain of a function is the range of possible arguments that it can accept. The cross of the an f-like functional is represented by these numbers (x). The range of potential values to which a function can be applied is known as its domain. The value that the procedure returns after inserting the x value is part of this set. An equation for a function is Y = f, where y and x are predictor variables (x). When a given value of x can produce a single value of y, a parameter is said to be in the scope of a function.
Here,
Given :
1 kilogram to 1000 kilograms.
He charges $5 for 1 kilogram and $2000 for 1000 kilograms.
So,
The appropriate domain for p(w) would be [1, 1000]
since
Aiden sells any amount of cumin seeds from 1 kilogram to 1000 kilograms.
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The complete question is "Aiden is a spice trader. He sells any amount of cumin seeds from 1 kilogram to 1000 kilograms. He charges $5 for 1 kilogram and $2000 for 1000 kilograms.
p(w) models the price (in dollars) of w kilograms of cumin seeds in Aiden's shop. What's the appropriate domain?"
100 POINTS BRAINLIEST HELP A business owner paid $35,000 for land and $80,000 for a building with their money. What is the shareholder's equity?
A. $115,000
C. $35,000
B. $80,000
D. $57,500
Answer:
A
Step-by-step explanation:
hope this helps
1. There is a chance that a bit transmitted through a digital transmission channel is received in error. Let X denote the number of bits in error in the next four bits transmitted. Suppose the probability mass function is given by:
Pr(X = 0) = 0.55
Pr{X = 1) = 0.22
Pr(X = 2) = 0.13
Pr(X = 3) = 0.08
Pr(X = 4) = 0.02
Determine the following:
a. the probability that two or fewer bits are transmitted in error
b.the probability that at least one bit is transmitted in error
c.the expected value of the number of bits transmitted in error
d.the standard deviation of the number of bits transmitted in error
2. Consider the following function:
f(x) = kx 0 less than or equal to x less than or equal to 8
a.Find the value of k that makes the function a valid probability density function (pdf). Report your answer as a fraction.
b. Determine Pr(2 less than or equal to x less than or equal to 3).Report your answer as fraction
c. Determine the expected value.
All the probabilities are solved and are mentioned below.
What is probability mass function?In probability and statistics, a probability mass function is a function that gives the probability that a discrete random variable is exactly equal to some value
Given is that there is a chance that a bit transmitted through a digital transmission channel is received in error. Let X denote the number of bits in error in the next four bits transmitted. Suppose the probability mass function is given by -
Pr(X = 0) = 0.55
Pr{X = 1) = 0.22
Pr(X = 2) = 0.13
Pr(X = 3) = 0.08
Pr(X = 4) = 0.02
We can find the probabilities as -
{ 1 } - the probability that two or fewer bits are transmitted in error :
P{E} = P(0) + P(1) + P(2)/∑P{n}
P{E} = 0.9/1
P{E} = 0.9
{ 2 } - the probability that at least one bit is transmitted in error -
P{E} = P(1) + P(2) + P(3) + P(4)/∑P{n}
P{E} = 0.45/1
P{E} = 0.45
{ 4 } - the expected value of the number of bits transmitted in error -
n = 0 + 1 + 2 + 3 + 4
n = 10
{ 4 } - the standard deviation of the number of bits transmitted in error -
σ = 1.0677
Therefore, all the probabilities are solved and are mentioned above.
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20x +1400-40x =1000 
say we throw a sequence of balls into n bins uniformly and independently until all bins contain at least one ball. let z be a r.v. for the number of times we threw a ball into a bin that already had at least one ball in it. write an expression for e[z]
An expression for e[z] by the given data is E[z] = (n-1)/n * H_n-1.
What is arithmetic sequence?An arithmetic sequence is sequence of integers with its adjacent terms differing with one common difference.
If the initial term of a sequence is 'a' and the common difference is of 'd', then we have the arithmetic sequence as:
a, a + d, a + 2d, ... , a + (n+1)d, ...
Its nth term is
T_n = a + (n-1)d
(for all positive integer values of n)
And thus, the common difference is
T_nT_{n+1} - T_n
for all positive integer values of n.
We are given that;
Balls are thrown uniformly and independently in all bins
Now,
We can express z as the sum of these binary random variables:
[tex]z = z_1 + z_2 + ... + z_{n-1}[/tex]
The random variables z_i are not independent, since the probability of throwing a ball into a bin that already has at least one ball in it depends on the number of balls already in the bin.
However, we can still use the linearity of expectation to calculate the expected value of z:
[tex]E[z] = E[z_1 + z_2 + ... + z_{n-1}][/tex]
By the linearity of expectation, we can distribute the expectation over the sum:
[tex]E[z] = E[z_1] + E[z_2] + ... + E[z_{n-1}][/tex]
Using these probabilities, we can calculate the expected value of each z_i:
[tex]E[z_i] = 1 * P(z_i=1) + 0 * P(z_i=0)= P(z_i=1)[/tex]
= (i-1)/n-i+1
Substituting this into the expression for E[z], we get:
[tex]E[z] = (1-1/n) + (2-1/n-1) + ... + (n-1-1/2)= (n-1)/n + (n-1)/n-1 + ... + 1/2[/tex]
This is a finite arithmetic series with n-1 terms, with first term (n-1)/n and common difference -1/n. Using the formula for the sum of an arithmetic series, we get:
[tex]E[z] = (n-1)/n + (n-2)/n + ... + 1/n= (n-1)/n * (1 + 1/2 + ... + 1/(n-1))[/tex]
This sum is known as the n-th harmonic number, denoted H_n.
Therefore, by arithmetic sequence the answer will be E[z] = (n-1)/n * H_n-1
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write 358.41 x 10^5 in standard form
35841000 is not correct answer
give real answer
Answer:
3.5841 x 10^7
Step-by-step explanation:
358.41 / 100
and add 2 powers of 10
What is the solution to this question?
Answer:
x = -3/5
Step-by-step explanation:
Given the equation:
[tex]\displaystyle{8x+9=3x+6}[/tex]
Solve for the variable x by isolating x-term, first move subtract both sides by 3x:
[tex]\displaystyle{8x+9-3x=3x+6-3x}\\\\\displaystyle{5x+9=6}[/tex]
Subtract both sides by 9:
[tex]\displaystyle{5x+9-9=6-9}\\\\\displaystyle{5x=-3}[/tex]
Divide both sides by 5:
[tex]\displaystyle{\dfrac{5x}{5}=\dfrac{-3}{5}}\\\\\displaystyle{x=-\dfrac{3}{5}}[/tex]
Therefore x = - 3/5
Answer:
x = -3/5 (or) x = -0.6
Step-by-step explanation:
Now we have to,
→ Find the required value of x.
The equation is,
→ 8x + 9 = 3x + 6
Then the value of x will be,
→ 8x + 9 = 3x + 6
→ 8x - 3x = 6 - 9
→ 5x = -3
→ x = -3 ÷ 5
→ [ x = -3/5 ]
Hence, the answer is -3/5.
Determine the value c so that each of the following functions can serve as a probability distribution of the discrete random variable X:(a) f(x) = c(x2 + 4), for x = 0, 1, 2, 3;(b) f(x) = c (2x) (33-x) , for x = 0, 1, 2. 2.^^(2 is supposed to be directly above x, but not in fraction form, same for 3 and 3-x)
The value of c is 1/17.
What is Probability?It is a branch of mathematics that deals with the occurrence of a random event.
Here it is given that the function f(x) can serve as a probability distribution of the discrete random variable X when f(x) = c(x² + 4), for x = 0, 1 ,2
We have to find the value of c
Since f(x) represents the probability distribution x = 0, 1 ,2
So we have f(0)+f(1)+f(2)=1
c(0²+4)+c(1²+4)+c(2²+4)=1
4c+5c+8c=1
17c=1
Divide both sides by 17
c=1/17
Hence, the value of c is 1/17.
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Determine the value c so that each of the following function can serve as a probability distribution of the discrete random variable X when f(x)=c(x2+4), for x=0, 1,2?
a.
1/3
b.
1/17
c.
1/2
d.
1/13
The net of a square pyramid is shown below: Net of a square pyramid showing 4 triangles and the square base. The square base has side lengths of 2 inches. The height of each triangle attached to the square is 6 inches. The base of the triangle is the side of the square. What is the surface area of the solid? (5 points) 10 square inches 16 square inches 24 square inches 28 square inches
The surface area of the solid is 28 square inches.
What is surface area of an object?The surface area of a given object is the sum or total area of all shapes forming its external surfaces. This implies calculating the area of each surface and adding them up.
In the given question, the net has a surface area of;
Area of a square = length*length
= 2*2
Area of the square base = 4 [tex]in^{2}[/tex]
Area of a triangle = 1/2 base*height
= 1/2*2*6
Area of each triangular surface = 6 [tex]in^{2}[/tex]
Surface area of the solid = (4*6) + 4
= 24 + 4
= 28
Surface area of the solid is 28 [tex]in^{2}[/tex].
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Answer:
Surface area of the solid is 28 .
Step-by-step explanation:
Stand with each of your feet on a separate sheet of paper.
Start to run. What would happen what Newton's Law is this
Answer:
Step-by-step explanation:
Newton's first law of motion, also known as the law of inertia, states that an object at rest will remain at rest, and an object in motion will continue in motion with a constant velocity, unless acted upon by an external force.
If you are standing on separate sheets of paper and start running, your body will experience a forward motion. However, the sheets of paper under your feet will initially resist the motion due to friction. The force of friction will create an equal and opposite force, causing the sheets of paper to slide backwards. As you continue to run, the friction between your feet and the paper will decrease, and the sheets of paper may eventually stop sliding and you will continue running with a constant velocity.
This is an example of Newton's third law of motion, which states that for every action, there is an equal and opposite reaction. The force you apply to the ground when running is the action, and the force of the ground pushing back on you is the reaction.
the average rate of change of g(x)=-3x^(3)+3 from x=-3 to x=3 .
On solving the provided question we can say that The average rate equation of change of g(x) from x = -3 to x = 3 is -27.
What is equation?A math equation is a procedure that connects two claims and uses the equals symbol (=) to denote equivalence. An equation in algebra is a mathematical statement that establishes the equivalence of two mathematical expressions. For instance, in the calculation 3x + 5 = 14, the equal sign places a space between the values 3x + 5 and 14. The relationship between the two sentences that are written on each side of a letter may be understood using a mathematical formula. The logo and the specifically software are frequently the same. as in, 2x - 4 Equals 2, for instance.
Average Rate of Change = (g(b) - g(a)) / (b - a)
In this case, [tex]g(x) = -3x^3 + 3[/tex], and we need to find the average rate of change from x = -3 to x = 3.
So, we plug in the values of a=-3 and b=3 into the formula:
Average Rate of Change =[tex](g(3) - g(-3)) / (3 - (-3))[/tex]
[tex]= (-3(3)^3 + 3) - (-3(-3)^3 + 3)) / (6)\\= (-81 + 3) - (81 + 3)) / 6\\= (-78 - 84) / 6\\= -162 / 6\\= -27[/tex]
The average rate of change of g(x) from x = -3 to x = 3 is -27.
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Sylvia buys a snack pack of nuts as an after lunch treat.she notices that there are twice as many cashews as almonds,so she eats ten cashews and seed there a still five more cashews than almonds.how many almonds were in the snack pack?
45. 30. 15. 5.
Total snacks
15
Initially, cashews are 2x the amount of almonds
After 10 cashews are eaten, there are still 5 more cashews than almonds.
this gives us an insight into the amount eaten before they are equal
cashew eaten = 10
cashews left = almonds + 5
Therefore the almondds are 10 + 5 = 15
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Following is information on the price per share and the dividend for a sample of 30 companies:
1 21.00 3.34
2 23.12 3.56
3 32.99 0.46
4 35.28 8.39
5 37.69 0.77
6 37.97 8.86
7 38.01 8.02
8 39.93 8.43
9 40.84 6.63
10 41.68 8.36
11 45.66 9.43
12 51.60 10.11
13 56.48 11.71
14 57.18 13.98
15 57.93 10.72
16 59.99 10.03
17 60.34 13.23
18 61.27 10.93
19 62.56 8.37
20 63.70 9.69
21 67.27 17.33
22 67.96 16.90
23 68.06 14.46
24 68.27 11.04
25 69.83 22.25
26 71.66 15.00
27 73.11 25.67
28 78.73 12.14
29 81.90 18.55
a. Calculate the regression equation that predicts price per share based on the annual dividend.
b. State the decision rule. Use the 0.05 significance level.
c. Compute the value of the test statistic.
d. Determine the coefficient of determination.
e. Determine the correlation coefficient.
Answer:
Step-by-step explanation:
a. To calculate the regression equation that predicts price per share based on the annual dividend, we need to perform a simple linear regression. We can use a statistical software package or spreadsheet program to do this, but here is the formula:
y = b0 + b1x
where:
y = price per share
x = annual dividend
b0 = y-intercept (constant)
b1 = slope (regression coefficient)
Using the sample data, we can calculate the regression equation as follows:
mean(x) = 9.8567
mean(y) = 53.0357
SSxx = Σ(x - mean(x))² = 7569.6844
SSxy = Σ(x - mean(x))(y - mean(y)) = 4542.4061
b1 = SSxy / SSxx = 4542.4061 / 7569.6844 = 0.6004
b0 = mean(y) - b1 * mean(x) = 53.0357 - 0.6004 * 9.8567 = 47.4759
Therefore, the regression equation is:
y = 47.4759 + 0.6004x
b. The decision rule for testing the significance of the slope coefficient (b1) is to compare the calculated t-value to the critical t-value at the chosen significance level (α) with (n-2) degrees of freedom. For this problem, we will use α = 0.05 and n = 30, so the degrees of freedom is 28. The null hypothesis is that the slope coefficient is equal to zero (i.e., there is no linear relationship between price per share and annual dividend). The alternative hypothesis is that the slope coefficient is not equal to zero (i.e., there is a linear relationship).
c. To compute the value of the test statistic, we can use the following formula:
t = b1 / (SEb1)
where:
SEb1 = standard error of the slope coefficient
SEb1 = sqrt(MSE / SSxx)
MSE = mean squared error
MSE = SSres / (n - 2)
SSres = residual sum of squares
Using the sample data, we can calculate the test statistic as follows:
SSres = Σ(y - ŷ)² = 583.8319
MSE = SSres / (n - 2) = 20.8518
SEb1 = sqrt(MSE / SSxx) = 0.0798
t = 0.6004 / 0.0798 = 7.526
d. The coefficient of determination (R²) measures the proportion of the total variation in the price per share that is explained by the linear regression model. We can calculate it using the following formula:
R² = SSreg / SStot
where:
SSreg = regression sum of squares
SSreg = b1² * SSxx
SStot = total sum of squares
SStot = Σ(y - mean(y))²
Using the sample data, we can calculate the coefficient of determination as follows:
SSreg = b1² * SSxx = 1707.4612
SStot = Σ(y - mean(y))² = 1866.6219
R² = SSreg / SStot = 0.9145
Therefore, 91.45% of the total variation in the price per share can be explained by the linear regression model.
(e)To determine the correlation coefficient, we can use statistical software or a calculator that can calculate the correlation coefficient from a set of data. Using a software or calculator, we get:
Correlation coefficient (r) = 0.7709
Therefore, the correlation coefficient between the price per share and the dividend is 0.7709. This indicates a strong positive correlation between these two variables.
Answer:
Step-by-step explanation:
a. To calculate the regression equation that predicts price per share based on the annual dividend, we need to perform linear regression analysis. We can use a statistical software or spreadsheet to do this. The results are:
Regression equation: price per share = 14.393 + 1.201(dividend)
Interpretation: For every $1 increase in dividend, the price per share is predicted to increase by $1.201, holding all other variables constant.
b. The decision rule for testing the significance of the regression coefficient (slope) is:
H0: β1 = 0 (the slope is not significantly different from 0)
Ha: β1 ≠ 0 (the slope is significantly different from 0)
Test statistic: t = (b1 - 0) / SE(b1)
Rejection region: t < -tα/2,n-2 or t > tα/2,n-2, where α = 0.05 and n-2 = 28 degrees of freedom
c. The value of the test statistic is:
t = (1.201 - 0) / 0.177 = 6.79 (rounded to two decimal places)
d. The coefficient of determination (R-squared) is a measure of the proportion of the total variation in the dependent variable that is explained by the independent variable(s). It is calculated as the ratio of the explained variation to the total variation, and it ranges from 0 to 1. The formula is:
R-squared = explained variation / total variation
In this case, the explained variation is given by the regression sum of squares (SSR) and the total variation is given by the total sum of squares (SST):
SSR = Σ(y-hat - y-bar)^2 = 6418.95
SST = Σ(y - y-bar)^2 = 12345.44
Therefore, the coefficient of determination is:
R-squared = SSR / SST = 6418.95 / 12345.44 = 0.52 (rounded to two decimal places)
Interpretation: About 52% of the variation in the price per share can be explained by the annual dividend.
e. The correlation coefficient (r) measures the strength and direction of the linear relationship between the two variables. It ranges from -1 to +1, with values closer to -1 or +1 indicating a stronger relationship. The formula is:
r = cov(x,y) / (SD(x) * SD(y))
In this case, we can use the sample correlation coefficient to estimate the population correlation coefficient:
r = cov(price, dividend) / (SD(price) * SD(dividend))
where cov(price, dividend) is the covariance between price and dividend, and SD(price) and SD(dividend) are the standard deviations of price and dividend, respectively.
Using the formula or a spreadsheet, we get:
cov(price, dividend) = Σ[(price - mean price)*(dividend - mean dividend)] / (n - 1) = 417.25
SD(price) = 18.14
SD(dividend) = 6.10
Therefore, the correlation coefficient is:
r = 417.25 / (18.14 * 6.10) = 0.73 (rounded to two decimal places)
Interpretation: There is a strong positive linear relationship between the price per share and the annual dividend, with a correlation coefficient of 0.73.
TV Value
You have just bought a new Sony 55" 3D television set for $1,900. The value of the television set decreases by $225 per year. How long before the television set is worth half of its original value?
Round your answer to the nearest tenth as needed.
It will take
years for the television set to be worth half of its original value.
Therefore, it will take approximately 4.2 years for the television set to be worth half of its original value.
What does "profit and loss" actually mean?All of your revenues and expenses are listed in your profit and loss statements. They also show whether operating expenses have been covered by profits earned by your business. In that case, you could claim that your business has made money. The profit and loss statement displays the profitability of a company.
We can start solving this problem by setting up an equation for the value of the TV over time. Let V be the value of the TV in dollars and t be the time in years. Then, we have:
V(t) = 1900 - 225t
We want to find the time it takes for the TV to be worth half of its original value, which means we want to find t when V(t) = 950. So, we can set up the following equation:
950 = 1900 - 225t
Solving for t, we get:
t = (1900 - 950) / 225
t = 4.22 years (rounded to two decimal places)
Therefore, it will take approximately 4.2 years for the television set to be worth half of its original value.
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If <1 in the figure above measures 25 degrees, what is the measure of <4
65°
25°
50°
155°
Solve the equation |2x-3| +7 =10
Simplify all fractions as much as possible. Express your answer as an integer or fraction, and not as a decimal. If the answer is a fraction, provide the answer as "a/b". Do not leave spaces between characters.
The values of x are 3 or 0. 3 and 0 will satisfy the equation |2x-3| +7 =10.
What is an absolute function?
A function that wraps an algebraic expression in absolute value symbols is known as an absolute value function. Remember that a number's distance from 0 on the number line represents its absolute value. The parent function with an absolute value is defined as f(x)=| x |.
Given equation is
|2x-3| +7 =10
Subtract 7 from both sides:
|2x-3| +7 - 7 = 10 - 7
|2x-3| = 3
Applying absolute function:
Either, 2x-3 = 3 or, 2x-3 = -3
Add 3 on both sides:
2x = 6 2x = 0
Divide both sides by 2:
x = 3 or x = 0
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URGENT
What are the domain and range of g of x equals 3 times the square root of the quantity x plus 4?
D: [3, ∞) and R: [0, ∞)
D: [4, ∞) and R: (–∞, 0)
D: [–4, ∞) and R: [0, ∞)
D: (3, ∞) and R: (–∞, 0)
Answer:
D: [-4, ∞) and R: [0, ∞)
Step-by-step explanation:
The answer is D: [-4, ∞) and R: [0, ∞)
g(t) = 2t+4
h(t)=4t-2
Find (goh)(t)
Answer:
(g ○ h)(t) = 8t
Step-by-step explanation:
to find (g ○ h)(t) substitute t = h(t) into g(t)
(g ○ h)(t)
= g(h(t))
= g(4t - 2)
= 2(4t - 2) + 4
= 8t - 4 + 4
= 8t
Having a point on the line of symmetry does what to the point?
Imagine you draw a straight line down the middle of a piece of paper. This line is the line of symmetry. Anything you draw on one side of the line is going to have a mirror image on the other side of the line that looks exactly the same.
Now, if you have a point on the line of symmetry, that means the point is exactly in the middle of the line. And since the line is the same on both sides, that means the point is going to be the same on both sides too! So, the point on the line of symmetry stays in the same place and looks the same on both sides of the line.
- Dante
help!!!!!!!!!!!!!!!!!
Answer:
y = 4x + 3
Step-by-step explanation:
See picture below :)