Can someone help please

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?

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels

If your teacher tells you to do questions 6 through 19 in your math book for homework, how many questions is that