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2 years ago

Each square below represents one whole ……. What percent is represented by the shaded area?

Mathematics

2 answers:

Sauron [17]2 years ago

8 0

Answer: 175 is the right answer

poizon [28]2 years ago

5 0

Answer:

Hi, There! my name is Jay and I'm here to help!

<h2>Question</h2>

What percent is represented by the shaded area?

<h2>Answer</h2>

87.5 %

Step-by-step explanation:

since our denominator in 7/8 is 8, we could adjust the fraction to make the denominator 100. To do that, we divide 100 by the denominator:

100 ÷ 8 = 12.5

Once we have that, we can multiple both the numerator and denominator by this multiple:

$\frac{7 ~x~12.5}{8~x~12.5} =\frac{87.5}{100}$

Therefore, I hope this helps!

Take care!

Happy Veterans day!

$-Jay-$

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At 95% confidence, how large a sample should be taken to obtain a margin of error of 0.03 for the estimation of a population pro

Gnom [1K]

Answer:

A sample of 1068 is needed.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

The margin of error is:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

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So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

At 95% confidence, how large a sample should be taken to obtain a margin of error of 0.03 for the estimation of a population proportion?

We need a sample of n.

n is found when M = 0.03.

We have no prior estimate of $\pi$ , so we use the worst case scenario, which is $\pi = 0.5$

Then

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$0.03 = 1.96\sqrt{\frac{0.5*0.5}{n}}$

$0.03\sqrt{n} = 1.96*0.5$

$\sqrt{n} = \frac{1.96*0.5}{0.03}$

$(\sqrt{n})^{2} = (\frac{1.96*0.5}{0.03})^{2}$

$n = 1067.11$

Rounding up

A sample of 1068 is needed.

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3 years ago

If $525 is 40% of my take home pay for 1 week how much to I make in a week

Vlada [557]

Answer: 525=2/5 so 1/5=262.5 and multiply that by 3 is 787.5 2/5 plus 3/5 is 100% so you would make 787.5

Step-by-step explanation:

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3 years ago

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Answer:

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Step-by-step explanation:

-2/11 j ≤ 8

Multiply each side by -11/2 to isolate j. Flip the inequality since we are multiplying by a negative

-11/2 * -11/2 j ≥ 8 * -11/2

j ≥ -44

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3 years ago

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The ratio of green food coloring to blue food coloring is 1:2. If we use 6 drops of blue, how many drops of green will we need?

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1:2 means for every 1 drop of green there was 2 blue

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3 years ago

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Answer:

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