Sam kicks a ball off of a rooftop. After t seconds, its height, h (in feet), is given by the formula h (t) = -16t? +64t + 80. *NOTE: Complete this without using graphing features on your calculator, and show all work for credit. You may type out your work or upload it in the next question. a. What is the maximum height reached by the ball? b. When did the ball reach its maximum height? c. When will the ball hit the ground? (Do algebraically) d. What is the height of the ball after 1 second?​

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.

Asquare and an equilateral triangle have the same perimeter. each side the triangle is 4 inches longer than each side of the square. what is the perimeter of the square

Which expression is the factorization of x^2+10+21