pls help? I need to know the answer asap​

Answer:

18ft

Step-by-step explanation:

6/27= 4.5, 27/4. 4.5x4=18

Answer:

18ft

Step-by-step explanation:

I am taking the test right now and I think this would be the correct answer!

A simple way I found out: 6/4 = 1.5 so I took 1.5 and divided 27 by it.  27/1.5 = 18

Hope this helped!

Yes, there is a relationship between advertisement expenditures and sales revenues. The fitted regression model is: Sales = 1591.28 + 3.59(Advertisement).

1. To construct a scatter plot, plot the advertisement expenditures on the x-axis and the sales revenues on the y-axis. Each data point represents one observation.
2. Use Excel to fit a linear regression line to the data by following the steps outlined in the textbook.
3. The fitted regression model is in the form of: Sales = Intercept + Slope(Advertisement). In this case, the model is Sales = 1591.28 + 3.59
4. The slope of 3.59 tells us that for every $1,000 increase in advertisement expenditures, there is an estimated increase of $3,590 in sales.
5. To determine if the slope is significant, perform a hypothesis test or check if the p-value associated with the slope coefficient is less than the chosen significance level.
6. The intercept of 1591.28 represents the estimated sales when advertisement expenditures are zero. In this case, it is not meaningful as it does not make sense for sales to occur without any advertisement expenditures.
7. The value of the regression coefficient, r, represents the correlation between advertisement expenditures and sales revenues. It ranges from -1 to +1.
8. The value of the coefficient of determination, r^2, tells us the proportion of the variability in sales that can be explained by the linear relationship with advertisement expenditures. It ranges from 0 to 1, where 1 indicates that all the variability is explained by the model.
9. To predict sales when the business spends $950,000 in advertisement, substitute this value into the fitted regression model and solve for sales. This will help determine if the model underestimates or overestimates sales.

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The theory of rational expectations suggests that people will form expectations about future economic conditions based on all available information, including past experiences and government policies.

This means that discretionary monetary and fiscal policy may work in the short run, but not in the long run, as people will adjust their behavior to take into account the expected effects of policy changes. However, it is also possible that new information may change people's expectations and allow them to correctly anticipate policy effects. Overall, the theory of rational expectations suggests that economic policies should be designed with a long-term perspective in mind, as short-term changes may not have the intended effects.

The theory of rational expectations suggests that information may change people's expectations and allow them to correctly anticipate policy effects (Option 3). This implies that individuals use all available information to make predictions about future economic policies and adjust their behavior accordingly, which can affect the overall effectiveness of discretionary monetary and fiscal policies.

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The number of ways this choir be formed if it must have more bluebirds than robins is 3111740

Total number of bluebirds = 14 bluebirds

Total number of robins = 11 robins

The members of the choir = 7 members

The possible combinations are

7 bluebirds = \(14C_7\) = 3432

6 bluebirds and 1  robin = \(14C_6\) × \(11C_1\) = 33033

5 bluebirds and 2 robins = \(14C_5\) × \(11C_2\) = 110110

4 bluebirds and 3 robins = \(14C_4\) × \(11C_3\) = 165165

Total combinations = 3432 + 33033 + 110110 + 165165

= 311740

Hence, the number of way this choir be formed if it must have more bluebirds than robins is 3111740

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Answer:

c) Energy is defined as the ability to do work. Work is the transfer of energy from one system to another.

Step-by-step explanation:

hope its help

Answer:

C. Energy

Step-by-step explanation:

Energy is defined as the capacity of a system to perform work, or the ability to cause a change in the state or motion of an object.

Answer:

Length is 7 units

Step-by-step explanation:

width- w

L- length

W+3=L
(w)(l)=28

hopes this helps

Answer:

He multiplied the divisor by 100 and the dividend by 10.

Step-by-step explanation:

Given that

Divisor = 0.52

And, the dividend is 754

It can be written as

Divisor is 52 i.e. (0.52 × 100)

And, the dividend is 7540 i.e. (754 × 10)

Now if we multiplied by 100 and divide by 10 so it gives the same result

Therefore the last option is correct and the same is to be considered

And all the other options are wrong

Answer:

D He multiplied the divisor by 100 and the dividend by 10

Step-by-step explanation:

Hope this helps:)

Answer:

I believe the answer you chose is correct. D

Step-by-step explanation:

The correct answer is

60 miles

4 gallons

Substitute x=3:

Therefore, f(3)=4

Value at f(3) is 4

Here we are given with the function which is in the form of: -

\(f(x)=x^2 - 5\\\)

here f(x) means function of x,  that is dependent on the equation mentioned above.

Now, according to question we have to find f(3). means we have to find the value of function when x=3.

Now replace f(x) with f(3).

\(f(3)=(3)^2 - 5\\\\(3)^2=9\\\\f(3)=9-5\\f(3)=4\)

So final value of function at x=3 is 4

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Answer:

yes Dan and Tess have enough money because the price is 22.9075 after discount

Step-by-step explanation:

the  original price of the book=24.50

the price of the book with taxes : 24.5+(24.5*10 %)=26.95 Dollars

the price for the students is :  24.50-(24.5*15%)=20.825

the price to students +tax= 20.825+(20.825*10%)= 22.9075

she took 15 % from original price :24.50-(24.5*15%)=20.825

she took 10 % of discounted price :20.825.50*10%= 1.04125

adds it back to find the purchase amount:1.04125+20.825=21.86625

Dan takes 85% of the normal purchase price: 24.50*85%= 20.825

then compute 110% to the discounted price: 20.825*110%=22.9075

Dan is right, he will pay 22.9075 which is actually the price that the student pay for the book after the discount. what Tess is that she calculated the tax before discount, she has to calculate the tax after discount.

Answer:

A) (1, 6) and B) (9,2) im pretty sure

Step-by-step explanation:

Inequalities help us to compare two unequal expressions. For all real numbers x such that x²<4, the interval which will satisfy the given inequality is (-2,2).

Inequalities help us to compare two unequal expressions. Also, it helps us to compare the non-equal expressions so that an equation can be formed. It is mostly denoted by the symbol <, >, ≤, and ≥.

Given the inequality x²<4, whose solution can be calculated as shown below.

x² < 4

x² - 4 < 0

x² - 2² < 0

(x+2)(x-2)<0

x = (-2, 2)

Hence, for all real numbers x such that x²<4, the interval which will satisfy the given inequality is (-2,2).

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Answer:

4 and -2

Step-by-step explanation:

4 + -2 = 2

4 x -2 = -8

Answer:

AC = 70

BG = 38

GC = 28

AE = 63

Step-by-step explanation:

The given parameters are;

The centroid of ΔABC = G

The length of FC = 35

The length of AG = 42

The length of BF = 57

The length of DG = 14

Given that the centroid is the intersection of the medians, we have;

FA = FC = 35 Definition of median line FB, (point F is the midpoint of AC)

AC = FA + FC = 35 + 35 = 70 by segment addition postulate

AC = 70

BG = 2/3 × BF = 2/3 × 57 = 38 Definition of median line BF

BG = 38

DG = 14 = 1/3 × DC Definition of median line

∴ DC = 3 × DG = 3 × 14 = 42

GC = 2/3 × DC = 2/3 × 42 = 28 Definition of median line DC

GC = 28

AG = 42 = 2/3 × AE Definition of median line AE

∴ AE = 3/2 × 42 = 63

AE = 63.

Answer:

\(\displaystyle s(t)=\frac{3}{4}t^3+10t^3+5t+3\)

Step-by-step explanation:

Integrate v(t) with respect to time

\(\displaystyle \int(3t^3+30t^2+5)\,dt\\\\=\frac{3}{4}t^4+10t^3+5t+C\)

Plug-in initial condition to get C

\(\displaystyle s(0)=\frac{3}{4}(0)^3+10(0)^3+5(0)+C\\\\3=C\)

Thus, the position function is \(\displaystyle s(t)=\frac{3}{4}t^3+10t^3+5t+3\) given the velocity function and initial condition.

Answer:

x=u/k

Step-by-step explanation:

To get x, you would divide by k. Because its x times k. The oppisite is division. This gets you u/k=x

x is equal to u divided by k.

x=u/k

Answer: B.

\(12x^{2}\) \(-8xy + 12x + y^2 - 2y\)

Step-by-step explanation:

i just took the assignment

Answer: answer 199

Step-by-step explanation:

1.99/100 is 199

the following rules:

A) We round the number up to the nearest hundred if the last two digits in the number are 50 or above.

B) We round the number down to the nearest hundred if the last two digits in the number are 49 or below.

C) If the last two digits are 00, then we do not have to do any rounding, because it is already to the hundred.

In this case, Rule A applies and 199 rounded to the nearest hundred is:

200

Using proportions, the number of pounds that will be needed for a single serving is: one and three seventh pounds.

A proportion is a fraction of a total amount, and the measures are related using a rule of three. Due to this, relations between variables, either direct(when both increase or both decrease) or inverse proportional(when one increases and the other decreases, or vice versa), can be built to find the desired measures in the problem, or equations to find these measures.

The number of pounds for 3 people is given by:

\(3 \frac{3}{7} = 3 + \frac{3}{7} = \frac{24}{7}\)

Hence, for one person, the number of pounds can be divided by three(multiplied by 1/3), hence:

\(\frac{24}{7} \times \frac{1}{3} = \frac{24}{21}\)

24 divided by 21 has a quotient of 1 and remainder of 3, hence as a mixed number, the amount is:

one and three seventh pounds.

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Answer:

Step-by-step explanation:

the awnser is cerrot.

Answer:

c and d

Step-by-step explanation:

when cut in half, both shapes are the same

Hello.

First, let the number be r.

5 times r is written like this:

\(\rm{5r}\)

Now, add 45:

\(\mathrm{5r+45}\)

Now, the sum of 5r+45 is equal to the sum of 85 and 140:

\(\mathrm{5r+45=85+140}\)

In order to solve this equation, we need to add 85 and 140:

\(\mathrm{5r+45=225}\)

Now, subtract 45 from both sides:

\(\mathrm{5r+45-45=225-45}\)

\(\mathrm{5r=225-45}\)

\(\mathrm{5r=180}\)

The last step is to divide both sides by 5:

\(\mathrm{r=36}\)

Therefore, the answer is

\(\rm{r=36}\)

I hope it helps.

Have a nice day.

\(\boxed{imperturbability}\)

The formula of the average velocity is, Average Velocity = (final displacement - initial displacement) / time

The formula for average velocity is:

Average Velocity = (final displacement - initial displacement) / time

or

Average Velocity = (change in displacement) / time

where "displacement" refers to the change in position of an object, and "time" refers to the time interval over which the displacement occurred.

Mathematically, this can be represented as:

v = (x_f - x_i) / t

or

v = Δx / t

where "v" represents the average velocity, "x_f" represents the final position of the object, "x_i" represents the initial position of the object, and "Δx" represents the change in position (i.e., final position - initial position). Finally, "t" represents the time interval over which the displacement occurred.

Therefore, the average velocity = (final displacement - initial displacement) / time

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To proceed with this analysis, we assume that the individuals in the sample were randomly selected and that the samples are independent.

Additionally, the sample sizes are large enough to apply the normal approximation to the sampling distribution of the difference in proportions.Using these assumptions, we can calculate the confidence in is 37/77 ≈ 0.481. The proportion of men who follow a regular exercise program is 44/85 ≈ 0.518. The difference between these proportions is 0.518 - 0.481 ≈ 0.037.

The 95% confidence interval for the difference in proportions can be calculated using the formula: difference ± (critical value) * sqrt[(p1 * (1 - p1) / n1) + (p2 * (1 - p2) / n2)] where p1 and p2 are the proportions of women and men, n1 and n2 are the respective sample sizes, and the critical value corresponds to a 95% confidence level. Performing the calculations, the 95% confidence interval for the difference in proportions is approximately 0.037 ± 0.129, which gives us a range from -0.092 to 0.166.

Interpreting this interval, we can say that with 95% confidence, the true difference between the proportions of women and men who follow a regular exercise program lies within the range of -0.092 to 0.166. This means that there is insufficient evidence to conclude that there is a significant difference in the proportions of women and men who follow a regular exercise program. The interval includes zero, indicating that the difference could be negligible or non-existent.

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L = k/f, where k is the variational constant, is the formula for the inverse variation.

A mathematical relationship between two variables in which they vary in opposing directions is referred to as an inverse proportion, also known as an inverse relationship. When one variable increases while the other decreases, this is known as having inverse proportions.

Using the variables length of violin 'l' and frequency of vibration 'f'

If the length of violin 'l' is inversely proportional to the frequency of vibration 'f', this is expressed as:

l α 1/f

l = k/f

Hence the formula for the inverse variation is l = k/f where k is the constant of variation.

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Answer:

D

Step-by-step explanation:

\(( {2 x})^{ \frac{1}{3} } - 7 = \sqrt[3]{2x} - 7\)

Researchers can increase the sample size, use more sensitive tests, conduct power analyses, improve data collection and measurement, and consider effect size and variability.

To reduce the risk of a Type II error, researchers can take the following steps:

1. Increase the sample size: By increasing the sample size, the statistical power of the test improves, making it easier to detect a true effect if it exists. A larger sample size reduces the likelihood of committing a Type II error.

2. Use a more sensitive test: Depending on the specific situation and data, researchers can choose to use a more sensitive statistical test. This may involve using a z-test instead of a t-test if the population parameters are known, or using a more advanced statistical method that is appropriate for the data.

3. Conduct a power analysis: Prior to conducting the study, researchers can perform a power analysis to determine the necessary sample size to achieve a desired level of statistical power. This helps ensure that the study has adequate power to detect meaningful effects.

4. Improve data collection and measurement: Researchers should ensure that data collection methods and measurement instruments are reliable and valid. This helps minimize measurement error and increases the accuracy of the results, reducing the risk of making a Type II error.

5. Consider effect size and variability: Researchers should consider the expected effect size and variability in the data when planning the study. Large effect sizes and lower variability make it easier to detect significant differences, reducing the likelihood of a Type II error.

In summary, to reduce the risk of a Type II error, researchers can increase the sample size, use more sensitive tests, conduct power analyses, improve data collection and measurement, mean and consider effect size and variability.

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