Evaluate the exponential expression (−2)6. Question 6 options: 64 −12 −64 12

If 20% of a number is 35, what is 50% of that number?

Just tell me how to set up the equation.

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 =