The angle of depression from a person on top of a cliff to a point 34 feet from the base of the cliff is 30°. what is the height of the cliff?

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%

Identify the number as a rational or irrational.explain. 127

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry