two point A and B are each distance 2000m from a third point C with an elevation of 100m, from which the measure vertical angle to A is 3.5 degrees B is 1.5 degrees. what is the difference in elevation between A and B considering the effects of earth curvature and refraction?

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 statement about the annual percentage rate (apr) is not true?

As a salesperson you get $50/day and $3.60/each sales you make.if you want to make $60 in one day, how many sales would you need need to make ? a 3b 4c 5d 6 show work.