What is the measure of ∠F?

Mathematics

2 answers:

kifflom [539]2 years ago

7 0

Answer:

94°

Step-by-step explanation:

This is a quadrelateral, and so all the sides must equal 360.

Set the equation: F + 66 + 132 + 68 = 360

Isolate the variable F. First, simplify. Combine like terms: F + (266) = 360

Isolate the variable F. Subtract 266 from both sides:

F + 266 (-266) = 360 (-266)

F = 360 - 266

F = 94

94 is your answer.

Alla [95]2 years ago

4 0

The answer is 94 degrees because this is how you work it out.

And a full shape is 360 degrees so you subtract it.

132+68+66=266
360-266=94

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A manufacturer of tires wants to advertise a mileage interval that ex-cludes no more than 10% of the mileage on tires he sells.

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Answer:

This mileage interval is from 30120 miles and higher.

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

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

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

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All he knows is that, for a large number of tires tested, the mean mileage was 25,000 miles, and the standard deviation was 4000 miles. This means that $\mu = 25000, \sigma = 4000$ .

A manufacturer of tires wants to advertise a mileage interval that ex-cludes no more than 10% of the mileage on tires he sells. What interval wouldyou suggest?

The lower end of this interval is X when Z has a pvalue of 0.90. That is $Z = 1.28$ .