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3 years ago

Kate collected a sample of monthly rents and recorded the following numbers:

Mathematics

1 answer:

d1i1m1o1n [39]3 years ago

8 0

C) will not effected (the most frequent is still 600$)

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Find the surface area of the triangular prism. Will mark brainliest!

klio [65]

Answer:

720 sq ft

Step-by-step explanation:

Formula:

2 B + P x H

3 0

3 years ago

Read 2 more answers

Factor the algebraic expression: 28a + 12

Vladimir [108]

Answer:

hope it is helpful to you

3 0

3 years ago

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5. Find the measure of the indicated angle.

Angelina_Jolie [31]

Answer:

180 - 26 = 154

10x + 8 + 9x - 25 = 154

19x - 17 = 154

19x = 171

x= 9

so » C is:98°

and » D is: 56°

5 0

3 years ago

A fashion designer wants to know how many new dresses women buy each year. Assume a previous study found the standard deviation

horsena [70]

Answer:

649

Step-by-step explanation:

Given that

Mean number of dresses is 5.5

Standard deviation of the sample, S.D is 1.3

Margin of error, M.E is 0.1

Level of confidence is 95% or 0.95

The formula for margin of error, M.E is

Z * (S.D/√n) , where

Z = Value for level of confidence which is 1.96

Proceeding further, we have

0.1 = 1.96 * (1.3/√n)

0.1 = 2.548 / √n, making √n subject of formula, we have

√n = 2.548 / 0.1

√n = 25.48, squaring both sides

n = 25.48²

n = 649.23

Therefore the number of sample size we're looking for is n = 649.23, when rounded to the nearest integer, we have it to be 649

4 0

3 years ago

Maggie can paint a fence in 9 hours, but Tom needs 12 hours to paint the same fence. How long does it take them to paint the fen

ehidna [41]

Working together, Maggie and Tom can paint the fence in 5.1 hours

<h3><u>Solution:</u></h3>

Given that,

Maggie can paint a fence in 9 hours

So in 1 hour maggie paints, $\frac{1}{9}$ of the house

Tom needs 12 hours to paint the same fence

So in 1 hour, tom can paint $\frac{1}{12}$ of the house

To find: time taken to paint the fence if they work together

Let "a" be the time taken to paint the fence if they work together

So working together, in 1 hour, they can paint $\frac{1}{a}$ of the house

We can frame a equation as:

To see how much of the fence they can paint together in one hour, we add these together.

$\frac{1}{9} + \frac{1}{12} = \frac{1}{a}$

$\frac{1}{a}$ is how much of the fence they can paint together in one hour. Therefore "a" is the number of hours it will take them both to paint the fence

On solving,

$\frac{12 + 9}{12 \times 9} = \frac{1}{a}\\\\\frac{1}{a} = \frac{21}{108}\\\\a = \frac{108}{21} = 5.1428$

So working together, Maggie and Tom can paint the fence in 5.1 hours

4 0

4 years ago