Question

Help me solve this please​

Answer 1

t = 96 seconds

Explanation:

The ball will hit the ground at height 0 (the ground is a height of 0), so plug in 0 for h.

h = -16t^2 + 20t + 6

0 = -16t^2 + 20t + 6

Now all that's left is to solve. First simplify:

0 = -8t^2 + 10t + 3

Use the quadratic formula.

`x = \frac{-b+-\sqrt{b^(2)-4ac} }{2a}`

`t = \frac{-10+-\sqrt{10^(2)-4(-8)(3)} }{2(-8)}`

Simplify further to get t = -16 and t = 96.

Since time can't be negative in this case, the answer is t = 96 seconds!

Answer 2

I don’t know it I need the app to stop bugging me best of luck