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4 years ago

A(x+y)-a(x-y) simplified .

Mathematics

2 answers:

Keith_Richards [23]4 years ago

7 0

Answer:

2ay

Step-by-step explanation:

a(x+y)-a(x-y)

Distribute

ax +ay - ax + ay

Combine like terms

2ay

Mrrafil [7]4 years ago

6 0

<h3>Answer: 2ay</h3>

Work Shown:

a(x+y)-a(x-y)

ax+ay-ax+ay

(ax-ax)+(ay+ay)

(0ax)+(2ay)

0+2ay

2ay

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Which set of measurements can represent the lengths of a triangle's sides?

zepelin [54]

Triangle, not a triangle, not a triangle, triangle

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3 years ago

The number of bones in a weightlifter's foot is 26 how many bones are there in the feet of 26 weightlifters

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Answer:

1352 bones

Step-by-step explanation:

There are 26 bones in 1 foot

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4 0

4 years ago

Read 2 more answers

What is the measure of x and y?

lisov135 [29]

Answer:

x=80 and y=30

Step-by-step explanation:

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3 years ago

The estimate of the population proportion should be within plus or minus 0.02, with a 90% level of confidence. The best estimate

Rudiy27

Answer:

The sample size required is 910.

Step-by-step explanation:

The confidence interval for population proportion is:

$CI=\hat p\pm z_{ \alpha /2}\sqrt{\frac{\hat p(1-\hat p)}{n} }$

The margin of error is:

$MOE=z_{ \alpha /2}\sqrt{\frac{\hat p(1-\hat p)}{n} }$

Given:

$\hat p = 0.16\\MOE= 0.02\\Confidence\ level =0.90$

The critical value of <em>z</em> for 90% confidence level is:

$z_{\alpha /2}=z_{0.10/2}=z_{0.05}=1.645$ *Use a standard normal table.

Compute the sample size required as follows:

$MOE=z_{ \alpha /2}\sqrt{\frac{\hat p(1-\hat p)}{n} }\\0.02=1.645\times \sqrt{\frac{0.16(1-0.16)}{n} }\\n=\frac{(1.645)^{2}\times 0.16\times (1-0.16)}{(0.02)^{2}} \\=909.2244\\\approx910$

Thus, the sample size required is 910.

5 0

4 years ago