SOLUTION: The hight H that a certain arrow will reach T seconds after being shot directly upward is given by the formula H=112T-16T�. what is the maximum hight for this arrow?

Question 297446: The hight H that a certain arrow will reach T seconds after being shot directly upward is given by the formula H=112T-16T�. what is the maximum hight for this arrow?
Answer by JBarnum(2146) (Show Source): You can put this solution on YOUR website!
please use the quadratic section for these problems, this is not age related

Solved by pluggable solver: SOLVE quadratic equation with variable

Quadratic equation (in our case ) has the following solutons:

For these solutions to exist, the discriminant should not be a negative number.

First, we need to compute the discriminant : .

Discriminant d=12544 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 0, 7. Here's your graph:

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