1. Which set of numbers can represent the side lengths of an obtuse
triangle?

A. 12, 16, 20

B. 8, 14, 17

C. 1,2,1

D. 3,4,5

E. 3.5, 3.5, 3.5

How do you find the area of a triangle

Find the cosine function that is represented in the graph.

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?