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3 years ago

Simplify. (4w + 3) – 2w + 7 2w + 10 2w - 10 6w + 10 6w - 10

Mathematics

1 answer:

7nadin3 [17]3 years ago

3 0

Hey there,

2w+10 would be the best choice here.
Sorry if I'm wrong, good luck!

:)

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Then the center is the point :

$(1 , 6)$

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What is the x-intercept and the y-intercept for x+2y=8

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3 years ago

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Answer:

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Step-by-step explanation:

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let p2 be the proportion of high school teachers who were single

Then, the null and alternative hypotheses are:

$H_{0}$ : p2=p1

$H_{a}$ : p2>p1

We need to calculate the test statistic of the sample proportion for elementary teachers who were single.

It can be calculated as follows:

$\frac{p(s)-p}{\sqrt{\frac{p*(1-p)}{N} } }$ where

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p is the proportion of elementary teachers who were single ( $\frac{15}{100} =0.15$ )

N is the sample size (180)

Using the numbers, we get

$\frac{0.2-0.15}{\sqrt{\frac{0.15*0.85}{180} } }$ ≈ 1.88

Using z-table, corresponding P-Value is ≈0.03

Since 0.03>0.01 we fail to reject the null hypothesis. (The result is not significant at α = 0.01)

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