Given: ab , cd are diameters
prove: bd = ca

Multiplying an even number of negative numbers gives an answer that is choose from:

What is the solution of sqrt x+2-15=-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%