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Alenkasestr [34]
2 years ago
11

Find the missing side. Can someone help???

Mathematics
2 answers:
I am Lyosha [343]2 years ago
5 0
20/tan 70 = 7.279404685
jasenka [17]2 years ago
3 0

Answer:

<h2>x= 7.27</h2>

Step-by-step explanation:

1) take a better picture next time

2) Add 70+90= 160 then 180-160= 20 to find the last angle

3) tan20= x/20

4) x= 7.27

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Answer:

d. 0.0047

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal probability distribution

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For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

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We have that \mu = 7.7, \sigma = 0.2

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This is 1 subtracted by the pvalue of Z when X = 8. So

Z = \frac{X - \mu}{\sigma}

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Z = \frac{8 - 7.7}{0.1155}

Z = 2.6

Z = 2.6 has a pvalue of 0.9953

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The probability is given by option d.

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