Which of the following pairs of numbers contains like fractions?
A. 3 1/2 and 44/4
B.5/6and 10/12
c. 6/7and 1 5/7
D. 3/2 and 2/3

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

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%

Ill mark the brainliest if you me with the these three questions 7,8,9