I just need the answer if you don’t have a real answer but want to say something just comment it

Answer:

a subtraction

Step-by-step explanation:

C.

Subtraction Property of Equality

Answer:

3rd one im pretty sure

Step-by-step explanation:

The 95.44% confidence interval for the mean score is approximately 68.47 to 81.53. Among the given options, the closest match is 68.3 to 81.7. Option b is correct.

To construct a confidence interval for the mean score, we can use the formula:

CI = X ± Z × (σ / √n)

where X is the sample mean, Z is the z-score corresponding to the desired confidence level, σ is the population standard deviation, and n is the sample size.

In this case, the sample mean X is 75, the population standard deviation σ is 10, and the sample size n is 9. The desired confidence level is 95.44%, which corresponds to a z-score of approximately 1.96.

Plugging in these values, we get:

CI = 75 ± 1.96 × (10 / √9)

  = 75 ± 1.96 × (10 / 3)

  ≈ 75 ± 6.53

Therefore, the 95.44% confidence interval for the mean score is approximately 68.47 to 81.53.

Among the given options, the closest match is 68.3 to 81.7, so the correct answer is b.

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The extreme point (x*, y*) of the function z = 25x + 16y - 4xy - 2x² - y² + 30 is  (-1.75, 8) and it is a maximum point.

To find the extreme point and its nature, we need to take the partial derivatives of the function with respect to x and y and set them equal to zero. The extreme point occurs when both partial derivatives are zero.

Taking the partial derivatives, we have:

∂z/∂x = 25 - 4y - 4x

∂z/∂y = 16 - 2y

Setting these derivatives equal to zero and solving the system of equations, we find:

25 - 4y - 4x = 0 ...(1)

16 - 2y = 0 ...(2)

From equation (2), we can solve for y:

2y = 16

y = 8

Substituting this value of y into equation (1), we can solve for x:

25 - 4(8) - 4x = 0

25 - 32 - 4x = 0

-4x = 7

x = -7/4 = -1.75

Therefore, the extreme point (x*, y*) is (-1.75, 8).

Since the second derivative test confirms that the point is a maximum, we can conclude that the extreme point (x*, y*) =  (-1.75, 8) is a maximum point.

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Answer:

i have to see the assigment

Step-by-step explanation:

Answer:

1413 sq ft.

Step-by-step explanation:

Area of a semicircle=(1/2)*πr²

Radius=30ft

A=(1/2)*3.14*30²=1413 sq ft.

Answer:

47%

Step-by-step explanation:

There are 15 total students, so find the percentage of girls out of the total students: 7/15= .466, which is about 47%. To double check, you can do the boys and make sure it adds to 100%. 8/15= .533, which is about 53%. 47+53=100. So girls are 47% and boys are 53%

Answer:

4. Buy at a local store where the item’s regular price is $58 and it is on sale for 10% off

Step-by-step explanation:

For the sake of someone needing help present time this is how you do it;

1st- 50 + (.89 x 11) = 59.79

2nd- 57 + (.49 x 11) = 62.39

3rd- 60 - 5 = 55

4th- 58 - 10% or 58 x .10 = 52.2: Lowest Answer

Answer:

the intergers include all negative whole numbers,zero,positive whole numbers

Answer:

the answer is 15. -9. 0. -3,128

Step-by-step explanation:

To find the rate of change of the volume when the radius is 12 inches, we can use the formula for the volume of a sphere:

V = (4/3) * π * [tex]r^3[/tex]

To find the rate of change of the volume, we need to take the derivative of the volume function with respect to time (t) using the chain rule. The derivative of the volume function with respect to time will give us the rate of change of the volume.

dV/dt = (dV/dr) * (dr/dt)

where dV/dt is the rate of change of the volume, dV/dr is the derivative of the volume with respect to the radius, and dr/dt is the rate of change of the radius.

Given that the radius is increasing at a rate of 5 inches per minute (dr/dt = 5), we can substitute this value into the formula.

Now, let's calculate the derivative of the volume with respect to the radius (dV/dr):

dV/dr = d/dt [(4/3) * π[tex]* r^3[/tex]] = (4/3) * π * [tex]3r^2[/tex]= 4π[tex]r^2[/tex]

Substituting the values into the formula for the rate of change of the volume:

dV/dt = (dV/dr) * (dr/dt) = 4π[tex]r^2[/tex]* 5 = 20π[tex]r^2[/tex]

When the radius is 12 inches (r = 12), we can plug this value into the formula to find the rate of change of the volume:

dV/dt = 20π[tex]r^2[/tex] = 20π(1[tex]2^2[/tex]) = 20π * 144 = 2880π

Therefore, when the radius is 12 inches, the rate of change of the volume is 2880π cubic inches per minute.

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No, neither fog nor gof is equal to x. The expressions fog(x) = 2/5x - 1 and gof(x) = 2/5x - 5 have different constant terms, indicating that they are not equal to x. The correct option is O (No, no.)

To determine whether the composite functions, fog and gof, are equal to x, we need to evaluate them using the functions f(x) = 1/5x and g(x) = 2x - 5.

First, let's calculate fog:

fog(x) = f(g(x)) = f(2x - 5) = 1/5(2x - 5) = 2/5x - 1

Next, let's calculate gof:

gof(x) = g(f(x)) = g(1/5x) = 2(1/5x) - 5 = 2/5x - 5

Comparing fog and gof, we can see that they are not equal to x. Specifically, fog(x) = 2/5x - 1 and gof(x) = 2/5x - 5.

Therefore, the correct option is "No, no" as neither fog nor gof is equal to x.

Alternatively, if we simplify fog and gof as a single expression, we have fog(x) = 2/5x - 1 and gof(x) = 2/5x - 5. Since both expressions have different constant terms, they cannot be equal to x.

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Answer:

Step-by-step explanation:

Common difference = 5

a₁ = 24

a₆ = a₁ + (6-1)5 = 49

Answer:

Hi! You're uspposed to check the equality, and it is false. 8/10 is not equal to 6/5.

However, If you add the two together by making the common denominator 10, you will get 20/10 or 2.

Answer:

4/5=6/5 :3

Step-by-step explanation:

Answer:

triangle bby

Step-by-step explanation:

Step-by-step explanation:

Right because there's an angle of 90

Answer:

sin 105 = sin (45 + 60) = sin 45 cos 60 + cos 45 sin 60, or

                                    = (1 / √2)(1 / 2)        + (1 / √2)(√3 / 2)

                                         1 + √3

                                    = -------------

                                           2√2

Step-by-step explanation:

(1) The statement that, "The $2 million is appropriate cash-inflow for the new edition of the book" is False because the cash-inflow is $1.8 million.

(2) The statement that, "Companies should use accounting profits, not cash flows, to make capital budgeting decisions" is False because, companies should focus on cash flows.

Part (1) The $2 million is not appropriate "cash-inflow" for "new-edition" of book. The $2 million represents "expected-sales" revenue from the new edition of "Foundation of Finance," but it does not take into account any costs or expenses associated with producing or marketing the book.

It is mentioned that $200,000 would have been spent on existing past edition of textbook. This expense needs to be deducted from expected sales revenue to determine the appropriate cash inflow.

So, appropriate cash-inflow for the new edition would be $2 million minus $200,000, which equals $1.8 million.

So, the statement is False.

Part (2) : Companies should use cash flows, not accounting-profits, to make capital budgeting decisions. Accounting-profits, also known as net income or earnings, are calculated based on accrual accounting principles and include non-cash items such as depreciation and amortization.

When making capital budgeting decisions, it is essential to consider the actual "cash-flows" generated by an investment project. Cash flows represent the cash inflows and outflows that occur over a specific period, and they are crucial for evaluating the feasibility and profitability of an investment.

Therefore, the statement is False.

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The correct answer is D.

The variable of time that could cause a student’s GPA to increase is studying.

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Approximately 0.0668 or 6.68% of people have a score above 50 in the given normal distribution.

To compute the z-score, we can use the formula:

z = (X - μ) / σ

Where:

X = observed value

μ = mean of the distribution

σ = standard deviation of the distribution

Given:

X = 60

μ = 10

σ = 30

Substituting these values into the formula:

z = (60 - 10) / 30

z = 50 / 30

z = 1.667 (rounded to three decimal places)

Therefore, the z-score is approximately 1.667.

Moving on to the second question, we need to find the proportion of people with a score above 50 in a normal distribution with a mean of -30 and a standard deviation of 15.

To calculate this proportion, we can use a standard normal distribution table or a statistical calculator. From the standard normal distribution table, we can find the area to the left of 50, which is 0.9332 (rounded to four decimal places).

Since we want the proportion above 50, we subtract this value from 1:

Proportion = 1 - 0.9332 = 0.0668 (rounded to four decimal places)

Therefore, approximately 0.0668 or 6.68% of people have a score above 50 in the given normal distribution.

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To answer your questions:

14. In a two-way between-subjects ANOVA with two groups per factor, you have 2 factors and a total of 4 groups in your study.

15. If the interaction F-test in a two-way between-subjects ANOVA is significant, the next step would be to conduct a post-hoc analysis to explore the specific group differences and determine the nature of the interaction effect. The choice of post-hoc test (e.g., Tukey, Bonferroni) would depend on the specific research question and the number of comparisons being made.

16. True. When there is an interaction in a two-way between-subjects ANOVA, it means that the means across the levels of one factor significantly vary depending on which level of the second factor is being considered.

17. If you have two factors that are both on an ordinal (or rank) scale, you would use the Spearman correlation coefficient to measure the relationship between these factors.

18. In a multiple regression analysis, you can have multiple outcome variables, but typically you would have only one outcome variable that you are trying to predict.

19. In a regression analysis, the "b" refers to the unstandardized weight (also known as the regression coefficient) of a predictor variable. It represents the change in the outcome variable for a one-unit change in the predictor, holding other predictors constant.

20. If the overall regression model is significant, the next step would be to examine the individual predictor variables (b-weights) to determine which variables are significant in predicting the outcome variable.

21. The largest positive standardized regression weight is represented by ob* = -0.35.

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Answer: y=-2

Step-by-step explanation:

Based on the location of the line and the focus of the parabola, the equation of the line will be y = -2.

The line is a horizontal line which means that the primary focus will be on the y axis.

The focus of the parabola is at F(6, 4) and the line is to be 6 units below this focus which means that the line on the y axis will be at:

= 4 - 6

= -2

This leaves the formula of the line as y = -2.

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Answer:

[tex]\dfrac{x+y}{2}[/tex]

Step-by-step explanation:

Let first number be x and another number is y.

A rational number is a fraction that can be expressed in the form of x/y.

A rational number between x and y is given by :

[tex]R=\dfrac{x+y}{2}[/tex]

So,

If x and y are two rational numbers such that x < y , then [tex]\dfrac{x+y}{2}[/tex] is a rational number in between x and y.

In this case, the p-value is not provided in the question, so the actual value needs to be calculated using the appropriate statistical test.

In hypothesis testing, the p-value represents the probability of obtaining the observed sample data, or more extreme data, assuming that the null hypothesis is true.

It measures the strength of evidence against the null hypothesis.

In this case, the null hypothesis is that the population proportion of black people is 0.2.

The alternative hypothesis is that the proportion is not equal to 0.2, indicating that there may be a difference in the population proportion.

To find the p-value, a statistical test (such as a proportion test) is performed using the sample data.

Based on the given information, the p-value is the probability associated with the test statistic obtained from the test.

The p-value indicates the likelihood of observing a proportion as extreme or more extreme than the one observed in the sample, assuming the null hypothesis is true.

A smaller p-value suggests stronger evidence against the null hypothesis.

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Option A,Option B and Option C is correct

What is parallelogram?

Parallelogram is 4 sided closed figure with opposites parallel and equal

Given,AB=CD

AD=BC

Since, its opposite sides are equal, it is a parallelogram.

∴ΔABD≅ΔBCD

AC= BD(By CPCTC)

B. Triangle ABC =~ Triangle CDA ( Since its a parallelogram)

C.AB =DC(Given)

D. Angle ABD =~ Angle DBC(wrong)

Therefore,Option A,Option B and Option C is correct

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Answer:

( B )              △ABC ≅ △CDA

( C )                    AB ≅ DC

Step-by-step explanation:

Khan Academy;

ABC = CDA, but ≅ means approximately which is also true.

AB = DC, because the distance matches.

Choose C.

x^2 = a/b must be true.

Answer:-x • (w2 - 12)

 ——————————————

       3w      

Answer:

99.95 yd

Step-by-step explanation:

Used the formulas

C=2πr

d=2r

Answer:

slope- intercept form

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + b ( m is the slope and b the y- intercept )