A.(x, y)-(2x,2y)
B.(x, y)-(3/2x,3/2y)
C.(x, y)-(3x,2y)
D.(x, y)-(x+2,y+2)

What is the ratio for the surface areas of the cones shown below, given that they are similar and that the ratio of their radil and altitudes is 4: 3? 23

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 product? a-3/15a × 5/a-3