An observer (O) is located 600 feet from a school (S). The observer notices a bird (B) flying at a 41° angle of elevation from his line of sight. How high is the bird flying over the school? You must show all work and calculations to receive full credit.

If you roll two fair dice (one black die and one white die), in how many ways can you obtain a 4 on at least one die?

If 3x+8=3x+8 is it one solution or no solution

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?