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3 years ago

Hey all!

Mathematics

1 answer:

Rainbow [258]3 years ago

8 0

Answer:

65°

Step-by-step explanation:

<u>Use the law of cosines:</u>

cos C = (25² + 27² - 28²)/(2*25*27)
cos C = 0.4222
m∠C = arccos 0.4222
m∠C = 65°

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Step-by-step explanation:

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Answer:

y = 1/e

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Step-by-step explanation:

y = (ln x)/x; (e, 1/e)

Step 1

Find the point of tangency.

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Step 2

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Step-by-step explanation:

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$\mu = 190, \sigma = 15$

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This is 1 subtracted by the pvalue of Z when X = 220. So

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So the correct answer is:

b. 2.5%

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