In division with decimals why do you bring the decimal up

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

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 =

If you answer 2+2 you will get over 80 points