Which of the following is equal to the expression listed below? 27 + 36

A.
(9 + 3)(9 + 4)
B.
9(3 + 4)
C.
9 + (3 × 4)
D.
(9 × 3)(9 × 4)

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The ratio of men to women working for a company is 4 to 5 . if there are 90 women working for the company, what is the total number of employees?

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?