Multiply and simplify. Assume that all variables represent positive real numbers.
? 
A. 3xy2
B. 9y2
C. 9xy4
D. 9xy2
Answer: D
Mathematics
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Solve the problem.Weights of adult females in a certain country are normally distributed with a mean of 136 lb and a standard deviation of 15 lb. A weight of 115 lb represents what percentile? Round the percentile to the nearest tenth.
A. 9.7 B. -1.4 C. 8.1 D. 2.2
Mathematics
Use a calculator to find the value of y in degrees rounded to two decimal places.y = cot-1 5.424
A. -10.45° B. 10.45° C. 10.62° D. 79.37°
Mathematics
Complete the comparative income statement. Round percents to the nearest tenth of a percent.
What will be an ideal response?
Mathematics
Choose the best estimate for the sum or difference.15 - 1
A. 13 B. 14 C. 20 D. 15
Mathematics