What are the prime factors of 30? 1,3,5 3,5,7 2,5,15 2,3,5

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

Solve the equation x/4 - 5= -8 -27 -12 -7 12

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%