X = 5, y = 30

Doesn't need an explanation!

Given this information, which expression must represent the value of b?

Segment xy is dilated through point m with a scale factor of 2. which segment shows the correct result of the dilation

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?