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3 years ago

If mABF= (7x+ 20) ° , mFBC= (2x–5) ° , and m ABC= 159 ° , find the value of x

Mathematics

1 answer:

Maksim231197 [3]3 years ago

7 0

-5 because 7x-2x=5x then -5-20 =-25 so -25/5=_5

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Answer:

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2 years ago

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Read 2 more answers

A test score of 48.4 on a test having a mean of 66 and a standard deviation of 11. Find the z-score corresponding to the given

Mariulka [41]

Answer:

A. -1.6; not significant

Step-by-step explanation:

The z-score of a data set that is normally distributed with a mean of $\bar x$ and a standard deviation of $\sigma$ , is given by:

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We just have to plug these values into the above formula to obtain:

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3 years ago