Solve using the quadratic formula.
q2 + 69 + 9 = 0

Which number produces a rationale number when multiplied by 1/5

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%

Given: prst square pmkd is a square pr = a, pd = a find the area of pmct.