On a test that has a normal distribution, a score of 64 falls two standard deviations above the mean, and a score of 56 falls two standard deviations below the mean.
Determine the mean of this test.

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

Ineed with this problem 21 show steps

You're locked out of your house. the only open window is on the second floor, 25 feet above the ground. there are bushes along the edge of the house, so you will need to place the ladder 10 feet from the house. what length ladder do you need to reach the window?