What is 75% of 102 2/3

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%

Which shows how to solve the equation 3/4x=6 for x in one step?

Write as a product of two polynomials. 2(3–b)+5(b–3)^2