Use the grouping method to factor the polynomial below completely. M+212 + 4x+8
A. (x + 2)(x+4)
B. (R+ 4)(x+4)
C. (x + 2)(x+2)
D. (x2+4)(x+2)

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%

What is the area of the triangle 10 13 12

You love to play soccer! you make a shot at the net 8 times during a game! of those 8 attempts, you score twice. what percent of the time did you score?