At 2:00 P. M., the water temperature in the pool was 88 °F. By 10:00 P. M. the
water temperature in the pool was
75 °F. By how many degrees did the
water temperature drop?

Compare the subtraction problems 6/8 - 5/8 = 1/8 and 6/9 - 7/9 = 1/9 why is the answer to the first problem positive and the answer to the second problem negative

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 of the following quartic functions has x = –1 and x = –2 as its only two real zeroes?