Find the coefficient of x4 y5 in the binomial expansion of (x + y)9.

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 = 126

Mathematics

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Use the given process data to construct a control chart for p.A drugstore considers a wait of more than 5 minutes to be a defect. Each week 100 customers are randomly selected and timed at the checkout line. The numbers of defects for 20 consecutive weeks are given below.4455555566661266676787

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Mathematics

Write the percent as a fraction or mixed number in simplest form.400%

A. 8 B. 2 C. 4 D. 40

Mathematics

Use a proportion to solve the problem.On a map of the Thunderbird Country Club golf course, 1.5 inches represent 30 yards. How long is the 13th hole if the map shows 11 inches?

A. 495 yards B. 220 yards C. 4.1 yards D. 330 yards

Mathematics

Rationalize the numerator of the expression. ?

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Mathematics