The initial temperature of a cup of tea is 200°f. the surrounding temperature is 70°f, and the value of the constant k is 0.6. applying newton's cooling model, the temperature of the tea after 2 hours will be °f.

There are 15 plates and each plate is either 7 or 12 inches diameter. which systems of equations do you use to find the number of 7 inch plates, x and 12 inch plates, y

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8

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.