Astudent has a container with a volume of 2.5 liters. he estimates the volume to be 2.2 liters. by what
percent is the student's estimate off?
te in off bu 120/

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

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 greatest number of parts of a circle that can be formed by cutting the circle with 7 straight cuts? (note: the parts do not have to be equal in size)