Vector u has its initial point at (15, 22) and its terminal point at (5,-4). Vector v points in a direction opposite that of u, and its magnitude is twice the magnitude of u. What is the component form of V?
OA. v=(-20, 36)
OB. v=(-20, 52)
OC v = (20, 36)
OD. v = (20,52)

Which is greater, 7 p 5 or 7 c 5? 7p5 7c5

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.

Suppose y varies directly with x. write a direct variation equation that relates x and y. then find the value of y when x=12 y=7 when x=3