Find the measure of each segment in the kite Find T

Which is the completely factored from of xy^3-x^3y

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

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%