Two smaller triangles have areas of 75m^2 and 12m^2. which of the following is the ratio of the perimeter of the smaller triangle to the perimeter of the larger triangle? a. 5: 2 b. 25: 4 c. 2: 5 d. 4: 25

Given a(-12,5) and b(12,29) find the point that divides the line segment ab three-eighths of the way from a to b

Find the area of the regular hexagon if a side is 20 cm.

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.