SOLUTION: The pathway of a football from one end of the field to the other can be represented by the equation h=-0.05d(d-220) where h represents the height and d represents the horizontal di

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: The pathway of a football from one end of the field to the other can be represented by the equation h=-0.05d(d-220) where h represents the height and d represents the horizontal di      Log On


   

Question 1002826: The pathway of a football from one end of the field to the other can be represented by the equation h=-0.05d(d-220) where h represents the height and d represents the horizontal distance. What is the horizontal distance of the football after it lands? What is the horizontal distance when the ball is at the maximum height? What is the maximum height?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
The questions can be answered by finding the roots or zeros of h, find the difference between them; and finding half this distance; and then finding h for the middle value between the two zeros.

Start by using -0.05d%28d-220%29=0; which should be no trouble, since the equation is already factorized.