Question

A baseball is thrown upward from a height of 40 feet. The height,"h", that the baseball is from the ground "t" seconds after being thrown is given by the equation h=-t^2+6t+40. How many seconds after being thrown will the ball hit the ground?

Answer 1

put that h=0 solve for t you'll get answer

Answer 2

This is a quadratic equation. Light ghazi said, you just need to set height equal to zero and solve.

Answer 3

And make sure you ONLY include the positive answer!!!

Answer 4

i got 10

Answer 5

Good.

Answer 6

correct

Answer 7

thnx for the help! :)

Answer 8

:)

Answer 9

we made....H=0 cuz on returning ground....height becomes zero...