Aman tied a rope to the top of a tree, which is 'x' m tall. the other end of the rope was tied to
the ground, 20 m away from the base of the tree. given that the length of the rope is 16 m
longer than the height of the tree, find the height of the tree.
(by using pythagoras' theorem)

What is the distance between the points (2 -3) and (-6 4) on the coordinate plane

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?

Mrs. gehrke said cheddar weighs 16.8 pounds. he actually weighs 15.2 pounds. what is the percent error?