What is the distance between the point (8,-3) and (1, 5)

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?

What is the volume of a cone with a height of 6 cm in the radius of 2 cm

Which number completes the inequality? 2/3 < _ < 7/9