the perimeter of a quadrilateral is 59 in. The longest side is four times as long as the shortest side. the other tow side are equally long and are 5 in longer than the short side. find the length of all four sides.

What is the volume of this square pyramid?

Find the slope of the line passing through a pair of points

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.