Carolyn purchased five bracelets. find the total cost of bracelets if each bracelet costs $3.10.justify your answer by using distributive property

1. what is the phythaforean theorem? 2.what do we use it for? 1.what is the distance formula ? 2.what do we use it for?

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

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?