Use properties to evaluate 1/3(-15 divided by 1/2)1/4 a. -5/2
b. 5/2
c. 5/8
d. -5/8

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =