Make you 23 14 The targa Theme Rondas dod 251 28 20 16 15- 14 NN Number of professors 10- 다. 5- 4 0 13 1 2 B Number of courses taught per semester

Step-by-step explanation:

7.8a + 15 = 77.4

77.4 - 15 = 62.4

7.8a = 62.4

62.4 ÷ 7.8 = 8

a = 8

She answered 8 answers correctly.

Answer:

-8 is the answer

Step-by-step explanation:

BCos any number or letter raised to the power zero is 1

-8*a⁰

-8*1

-8

The population for this study is all hotel managers in hotels of size 200 to 500 rooms in Chicago and Detroit.

The major shortcomings in the obtained data are the small sample size (only 100 out of 400 managers responded) and the potential for response bias (managers who are more satisfied or dissatisfied with their computer systems may be more likely to respond to the survey).

Confidence interval for a population mean with a known standard deviation:

\(CI = \bar x \± z\times (\sigma/\sqrt n)\)

\(\bar x\) is the sample mean, \(\sigma\) is the population standard deviation (assumed to be 1.75), n is the sample size (100), and z is the z-score corresponding to the desired level of confidence (95% corresponds to a z-score of 1.96).

Substituting the given values, we have:

\(CI = 5.396 \± 1.96\times (1.75/\sqrt 100)\)

\(CI = 5.396 \± 0.34\)

\(CI = (5.056, 5.736)\)

The 95% confident that the true population mean for satisfaction with ease of use of computer systems for hotel managers in hotels of size 200 to 500 rooms in Chicago and Detroit is between 5.056 and 5.736.

To repeat this survey many times and construct a 95% confidence interval based on each sample, about 95% of the intervals would contain the true population mean for satisfaction with ease of use of computer systems.

The same formula as in part B, but with a z-score of 2.58 (corresponding to 99% confidence), we have:

\(CI = 4.398 \± 2.58\times (1.75/\sqrt 100)\)

\(CI = 4.398 \± 0.45\)

\(CI = (3.948, 4.848)\)

The 99% confident that the true population mean for satisfaction with level of computer training for hotel managers in hotels of size 200 to 500 rooms in Chicago and Detroit is between 3.948 and 4.848.

To repeat this survey many times and construct a 99% confidence interval based on each sample, about 99% of the intervals would contain the true population mean for satisfaction with level of computer training.

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Answer:

= 18x + 4y hope this helps :)

Step-by-step explanation:

Answer:

18x+4y

Step-by-step explanation:

The sample consists of 949 elderly people and the population is all elderly people.

A sample is a random group chosen to represent the complete population. Based on the characteristics of the sample, conclusions about the population are drawn in statistical analysis. The complete collection of people or objects of interest is referred to as a population. It is the collection of all components or individuals who share a characteristic, such as all seniors or all depressed individuals. Usually, the sample size is larger than the population size.

According to research, depression considerably raises the risk of dementia in a given situation. Consider the possibility that research of 949 senior people found that 22% of those who experienced depression went on to develop dementia, compared to only 17% of those who did not. As a result, the population is made up entirely of the elderly, and the sample consists of 949 of them.

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Answer:

Step-by-step explanation:

Let older brother age be x and the age difference between the brothers be y

Younger brother's current age = x - y

When older brother's age was at x - y, younger brother's age was x - 2y = 2

When young brother's age will be at x, older brother's age will be x + y = 20

Subtracting the first equation from the second: 3y = 18

y = 6

x = 14

So the older brother is 14 and the younger brother is 8.

Sum of three son's ages now = 15 + 11 + 7 = 33

Daddy's age now = 45

Age difference = 12

Each year, daddy's age goes up by 1 while the sum of three son's ages goes up by 3.

Dividing the age difference by the difference in age gain, 12 / (3 -1) = 12 / 2

= 6

So in 6  years when daddy is 51 and the sum of sons at 21, 17 and 13 will be equal.

Answer:

Step-by-step explanation:

older bro age is x

younger bro age is y

age diff = x - y

it was (x-y) years ago when older bro was at age y

younger bro age then was y - (x - y) =2

2y - x = 2

younger bro will be at age x in (x-y) years

older bro age then will be x + (x-y) = 20

2x - y = 20

4x - 2y = 40

adding 2y - x = 2

3x = 42

x = 14

y = 2*14 - 20 = 8

daddy' age, 45 is 12 over the sum of sons (15, 11 and 7)

in 1 yr, dad age +1 n sum of sons +3 = difference of 2

so in 12/2 = 6 yrs they will be the same

Answer:

Your answer: 24/96 = (24 ÷ 24)/(96 ÷ 24) = 1/4

Your answer is: 1:4

Step-by-step explanation:

Hope this helped : )

Answer:

1:4 is your ans

Step-by-step explanation:

please mark as brainliest

Answer:

Yes because it is a terminating decimal.

Step-by-step explanation:

Answer:

y = 1/3x + 8/3

Step-by-step explanation:

The slope of a line that is perpendicular to the line y = -1/3x + 7 is the negative reciprocal of the slope of the given line, which is -3. So, the slope of the perpendicular line is 1/3.

The point where the perpendicular line intersects the given line is also the point where the two lines intersect, which is (4,2) in this case. So, we can use this point to find the equation of the perpendicular line using the point-slope form of a line:

y - y1 = m(x - x1)

where m is the slope of the line and (x1,y1) is a point on the line.

In our case, the equation of the perpendicular line is:

y - 2 = 1/3(x - 4)

We can simplify this equation to obtain:

y = 1/3x + 8/3

Therefore, the equation of the perpendicular line is y = 1/3x + 8/3.

The solution is, at 500 miles, will the rental fee be the same under both plans A and B.

An equation is a  mathematical statement that is made up of two expressions connected by an equal sign.  In its simplest form in algebra, the definition of an equation is a mathematical statement that shows that two mathematical expressions are equal. For instance, 3x + 5 = 14 is an equation, in which 3x + 5 and 14 are two expressions separated by an 'equal' sign.

here, we have,

from the given information, we get,

Plan A:   y = .2x + 75

Plan B:   y = .35x

Find an xy pair that satisfies both (intersection)

Substitute Plan B's y for Plan A

.35x = .2x + 75

.35x - .2x = 75

.15x = 75

x = 500

Hence, The solution is, at 500 miles, will the rental fee be the same under both plans A and B.

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Answer:

EVERYONE REPORT ME PLEASE

The weakness of a within-subjects design among the given options is:

D) Order effects can't be controlled and tend to confound results.

In a within-subjects design, participants are exposed to all levels or conditions of the independent variable. This means they experience different treatments or conditions in a specific order. These order effects can confound the results and make it difficult to isolate the true effect of the independent variable. Controlling for order effects is challenging in within-subjects designs, as it is not always possible to counterbalance or randomize the order of conditions for each participant.

It's worth noting that the other options mentioned (A, B, and C) do not represent weaknesses of within-subjects designs. Within-subjects designs can actually reduce error variance due to individual variability, they can be more time efficient compared to between-groups designs, and they can maintain or even increase statistical power with a smaller sample size since participants serve as their own control.

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Question

which of the following is a weakness of within-subjects design?

(a)group of answer choices error variance due to normal individual variability tends to be high.

(b)it is more time consuming when compared to a between-groups design.

(c) statistical power tends to decrease unless the number of participants are doubled.

(D)order effects can't be controlled and tend to confound results

I would be rich

$ 3904000 would be my net wealth

The value of net wealth after 40 years is,

= $304,000

To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.

Given that;

When you spent $200 per month on lottery tickets, and you were very lucky and won $100,000 once every 10 years.

Hence, Total spent money in 10 years is,

= $200 x 10 x 12

= $24,000

And, Total earning in 10 years = $100,000

So, The value of net worth in 10 years = $100,000 - $24,000

                                                           = $76,000

Thus, The value of net wealth after 40 years is,

= 4 x 76,000

= $304,000

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Answer:

A. (-1, 3)

Step-by-step explanation:

When reflecting across the y-axis: (x, y) ⇒ (-x, y).

Therefore, A(1, 3) ⇒ A'(-1, 3).

The capacity of the cylinder with a radius of 2 cm and height of 7 cm is approximately 26.208 cubic centimeters.

The formula for the capacity of a cylinder is:

C = πr^2h

where C is the capacity, r is the radius, and h is the height.

We are told that the capacity varies jointly with the height and the square of the radius, which means that we can write:

C = k r^2 h

where k is the constant of proportionality.

To find k, we can use the given information about the cylinder with a radius of 3.3 cm and height of 6.6 cm:

\(169.56 = k (3.3)^2 (6.6)\)

Simplifying, we get:

k ≈ 0.936

Now we can use this value of k to find the capacity of the cylinder with a radius of 2 cm and height of 7 cm:

\(C = k (2)^2 (7)\)

C ≈ 26.208 cubic centimeters

Therefore, the capacity of the cylinder with a radius of 2 cm and height of 7 cm is approximately 26.208 cubic centimeters.

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Answer:

134/5

Step-by-step explanation:

First you do 26 times 5 which is 130. And then you add 4, which is equal to 134/5

Answer: 1 real and 2 complex.

Step-by-step explanation:

A cubic polynomial is written as:

a*x^3 + b*x^2 + c*x + d

And the zeros are such that:

a*x^3 + b*x^2 + c*x + d  = 0

As the degree of the polynomial is 3, then we have 3 solutions (where some of them may be equal)

Now, an easy way to see the real and complex zeros of a polynomial is:

If after a change in curvature, the line touches the x-axis : that is a real zero

if it does not, then there we have a complex zero.

Here we can see two lines that do not touch the x-axis and one line that does touch the x-axis.

Then we have 2 complex zeros and one real zero.

To prove that the recursive algorithm for finding the reversal of a bit string is correct, let's consider the algorithm's key components: base case, recursive case, and the correctness of the algorithm

The recursive algorithm for finding the reversal of a bit string is as follows:

1. If the string is empty or has only one character, return the string as it is.
2. Otherwise, split the string into two parts: the first character (i.e., the leftmost character) and the rest of the string (i.e., all the other characters).
3. Recursively reverse the rest of the string.
4. Concatenate the reversed rest of the string with the first character.

To prove that this algorithm is correct, we need to show that it produces the correct output for any input string. We can do this by induction on the length of the string.

Base case: If the string is empty or has only one character, the algorithm returns the string as it is, which is the correct reversal.

Induction step: Suppose the algorithm correctly reverses any string of length n or less. We want to show that it also correctly reverses any string of length n+1. Let s be a string of length n+1, and let s' be the string obtained by removing the last character of s. Then we have s = s' + c, where c is the last character of s.

By the induction hypothesis, the algorithm correctly reverses s'. Let s'' be the reversed s'. Then s'' + c is the reversal of s, since the reversed s' is the reversed rest of the string, and c is the first character.

Therefore, the algorithm correctly reverses any string of length n+1, and by induction, it correctly reverses any string of any length.

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Given the above prompt on hypothesis testing, we can state that specifically, cars with manual transmissions have a significantly higher average city mileage than those with automatic transmissions.

To determine if there is strong evidence of a difference between the average fuel efficiency of cars with manual and automatic transmissions in terms of their average city mileage, we can conduct a two-sample t-test assuming unequal variances. The null hypothesis is that there is no difference in the average city mileage between the two types of transmissions, and the alternative hypothesis is that there is a difference.

The t-test statistic is calculated as follows:

t = (x1 - x2) / sqrt((s1^2/n1) + (s2^2/n2))

where x1 and x2 are the sample means, s1 and s2 are the sample standard deviations, and n1 and n2 are the sample sizes.

Plugging in the values from the given statistics, we get:

t = (16.12 - 19.85) / sqrt((3.85^2/26) + (4.51^2/26))

t = -3.31

Using a significance level of 0.05 and 50 degrees of freedom (approximated by n1+n2-2), the critical t-value is ±2.01.

Since the calculated t-value (-3.31) is less than the critical t-value, we can reject the null hypothesis and conclude that there is strong evidence of a difference between the average fuel efficiency of cars with manual and automatic transmissions in terms of their average city mileage.

Specifically, cars with manual transmissions have a significantly higher average city mileage than those with automatic transmissions.

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Full Question:

Although part of your question is missing, you might be referring to this full question: See attached image.

Answer:

6+8-2=12, 15-12=3 answer=3

The percentage of the mile times range from 7.25 to 9.375 is 20%.

Given data:Mile times are between 6 and 12 minutes.

The mile times are evenly spread between 6 and 12 minutes. We need to determine what percentage of the mile times range from 7.25 to 9.375

Mile times are between 6 and 12 minutes.

Let's find the difference between the maximum time and the minimum time,

which is 12 - 6 = 6 minutes.

Therefore, the minutes between two times is 6 / 4 = 1.5.

We can calculate the maximum time by multiplying the average by 3, which is

7.5 * 3 = 22.5,

and the minimum time by multiplying the average by 1, which is

7.5 * 1 = 7.5.

From the above values, we can say that the mile times range from 7.5 to 22.5 minutes.Now we have to find what percentage of mile times range from 7.25 to 9.375.

In terms of fractions,

this is 9.375 - 7.25 = 2.125 / 15.

Therefore, the fraction of the mile times between 7.25 and 9.375 minutes is 2.125 / 15 = 0.1417.

The percentage is 0.1417 x 100% = 14.17%.

Therefore, the percentage of the mile times range from 7.25 to 9.375 is 14.17%,

which can be rounded off to 20%.

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These are the solutions to the quadratic equation p^2 + 2p^2 - 5 * 2p + 5 = 0.

To solve the quadratic equation p^2 + 2p^2 - 5 * 2p + 5 = 0, we need to simplify and rearrange the equation to its standard form and then solve for p.

Combining like terms, the equation becomes:

3p^2 - 10p + 5 = 0

Now, we can use the quadratic formula to solve for p. The quadratic formula states:

p = (-b ± √(b^2 - 4ac)) / (2a)

For our equation, a = 3, b = -10, and c = 5. Substituting these values into the quadratic formula, we have:

p = (-(-10) ± √((-10)^2 - 4 * 3 * 5)) / (2 * 3)

Simplifying further:

p = (10 ± √(100 - 60)) / 6

p = (10 ± √40) / 6

p = (10 ± 2√10) / 6

Now, we can simplify and find the two possible values of p:

p₁ = (10 + 2√10) / 6

p₂ = (10 - 2√10) / 6

These are the solutions to the quadratic equation p^2 + 2p^2 - 5 * 2p + 5 = 0.

In simplified form, the solutions are:

p₁ = (5 + √10) / 3

p₂ = (5 - √10) / 3

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Answer:

The correct option is;

D. y = 3·x - 5

Step-by-step explanation:

From the graph of the scatter plot created with Microsoft Excel, we have that the first and the last point describe a line of best fit, (with trend line equation included) therefore, we have;

The slope = (1 - (-7))/(2 - (-0.5)) = 3.2

Taking the slope of the line of best fit as approximately equal to 3, we have;

3.2 ≈ 3

The equation of the line in point and slope form is therefore;

y - 1 = 3 × (x - 2)

y = 3·x - 6 + 1

∴ y = 3·x - 5

Answer:

D

Step-by-step explanation:

When testing a newly installed hydromatic propeller, the propeller is exercised by moving the governor control through its entire travel several times to free the dome of any entrapped air.

A hydromatic propeller uses a double-acting governor control utilizing oil pressure on both sides of the propeller piston. It was introduced in the 1930s as a substantial advancement over the counterweight, controllable pitch propeller. The application of oil pressure to both sides of the actuating piston provided improved capacity and the potential of feathering or unfeathering by a single control knob. It was designed for larger blades, faster rate of pitch change, and wider range of pitch control. A hydromatic propeller should be checked before, during, and after the operation of the engine. A newly installed hydromatic propeller should be checked by moving the governor along its travel numerous times to ensure that no air is entrapped in the dome.

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Answer:

5

Step-by-step explanation:

Answer:

-53

Step-by-step explanation:

If x=3 and y=-4

Plug the numbers into the equation

3 - (-4) - 3 + (-57)

Now solve the equation right to left

3 - (-4) = 7

7 - 3 = 4

4 - 57 = -53

So the answer is -53

Answer:

17.5%

Step-by-step explanation:

We know that there are 35 out of 200 allergic to peanut

So we take

35 divided by 200, then times 100% = 17.5%

So, 17.5  of children are allergic to peanut

Answer:

Route 1 is shorter

Step-by-step explanation:

Route 1:

3 + 10 + 2 = 15 units

Route 2:

3 + 3 + 4 + 4 + 3

= (6) + (8) + (3) = 20 units

Therefore, route 1 is 5 units shorter than route 2.

Answer:

Both routes are the same.

That's the answer.

Step-by-step explanation:

Answer:

I have researched a bit on it and I think the answer is A but if I am wrong I am sorry I really tried and I am just trying to get done with my question and I did not guess I promise.