SOLUTION: Jack kicked a soccer ball. The height of the ball, h, in metres, can be modelled by h=-2.4x^2+12x, where x is the horizontal distance from where he kicked the ball. How far did

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: Jack kicked a soccer ball. The height of the ball, h, in metres, can be modelled by h=-2.4x^2+12x, where x is the horizontal distance from where he kicked the ball. How far did       Log On


   

Question 1118694: Jack kicked a soccer ball. The height of the ball, h, in metres, can be modelled by h=-2.4x^2+12x, where x is the horizontal distance from where he kicked the ball.
How far did Jack kick the ball?
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
What far? How far UP did he kick the ball? No.

One of the x values for which h was 0.

How far, HORIZONTALLY?
-2.4x%5E2%2B12x=0
x%28-2.4x%2B12%29=0
12=2.4x
x=5