What is the missing side length in this right triangle? a. 15 b. 21 c. 225 d. 441
9,12?

Ihave trouble finding the nth term of a linear sequence

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180

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%