Suppose we know that the width of a rectangle is 3 3/4 cm and the area is 15 square cm. Write and solve a division equation to help you find the length of the triangle.

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.

Prove that 16^4-2^13-4^5 is divisible by 11.