CD is an altitude in right triangle ABC. The hypotenuse is 9 inches long, and AD is 5 inches long as shown below.
What is the value of a?

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

Which expression will have the same sum as 3_8 + 1/4?

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 =