SOLUTION: The flight of a baseball that has been hit when it was 4 feet off the ground is modeled by the function h = -16t (to the 2nd power) + 75t + 4 where h is the height of the baseball

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Question 613032: The flight of a baseball that has been hit when it was 4 feet off the ground is modeled by the function h = -16t (to the 2nd power) + 75t + 4 where h is the height of the baseball in feet after t seconds. Rounding to the nearest hundredth, how long will it take before the ball lands on the ground? (Please show your work)
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
on the ground is h=0

0 = -16t^2 + 75t + 4

use the quadratic formula to find the solution (you want the positive one)

t+=+%28-75+%2B-+sqrt%28+75%5E2-4%2A%28-16%29%2A4+%29%29%2F%282%2A%28-16%29%29+