in a triangle ABC, Angle C is a right angle, and the measurement of Angle A is 33 degrees. which expression represents the length of line AC

How do you divide 9/4 divided by 10/3

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

How can you construct perpendicular lines and prove theorems about perpendicular lines