Audrey needs to cut 1 meter of yellow ribbon and 28 centimeters of blue ribbon. in total, how many centimeters of ribbon does she need? centimeters

Which of the following is correct interpretation of the expression -4+13

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?

How many verticies does a triangular prims have