When we find the perimeter of a shape, how many dimensions are we measuring?

Which expression is equivalent to 4 square root 6 divided by 3 root 2

For which pair of functions is (gof)(a)=|a|-2?

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?