Michelle throws a ball vertically upward from the top of a cliff. The height of the ball above the base of the cliff is approximated by the model H=65+10t – 5t, where H is the height in metres and t is the
time in seconds. How long does it take the ball to reach a height of 50 m above the base of the cliff?

Write an equation of the line that passes through 9,2 and is parallel to the line y=5/3x+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.

Question 9 of 10 2 points suppose your sat score is 1770. you look up the average sat scores for students admitted to your preferred colleges and find the list of scores below. based on your sat score of 1770, which average score below represents the college that would be your best option? o a. 1790 o b. 2130 o c. 2210 od. 1350