What are all the common factors of 24,64 and 88

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 radical expression is a rational number? a. √ 360 b. √ 644 c. √ 225 d. √ 122

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.