h = -16t2 + 36t + 4.

Question

anonymous · Answer

what are you suppose to do in the equation?

anonymous · Answer

simplify?

anonymous · Answer

idk this is the full question

If a football player passes a football from 4 feet off the ground with an initial velocity of 36 feet per second, how long will it take the football to hit the ground? Use the equation h = -16t2 + 36t + 4.

anonymous · Answer

That's a Quadratic Equation.

anonymous · Answer

$$\Large \frac{9+\sqrt{97}}{8} \ \text{or} \ \frac{9-\sqrt{97}}{8}$$

anonymous · Answer

$$\Large \frac{9+\sqrt{97}}{8} \approx 2.356107225$$ 
$$\Large \frac{9-\sqrt{97}}{8} \approx -0.1061072252$$

anonymous · Answer

Then toss out the negative answer since it doesn't make any sense.
 So the ball will hit the ground at about 2.356 seconds

anonymous · Answer

yes that is one of the answer choices. good job! thank you