The area of the base of a rectangular pyramid is 85.4 cm². If the area of each triangular face along the length and breadth is 28.5 cm² and 23.2 cm² respectively, find the total surface area of the pyramid.

Select all of the quadrants that the parabola whose equation is y=√x-4 (principal square root) occupies. i ii iii iv

Divide. reduce the answer to lowest terms.5 2/3 ÷ 3 1/9

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.