SOLUTION: A missile fired straight up into the air has a height, in feet, given by h = -16 t^2 + 64 t, where t is the time, in seconds, the missile has been in the air. By setting up and

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: A missile fired straight up into the air has a height, in feet, given by h = -16 t^2 + 64 t, where t is the time, in seconds, the missile has been in the air. By setting up and      Log On


   



Question 764336: A missile fired straight up into the air has a height, in feet, given by h = -16 t^2 + 64 t, where t is the time, in seconds, the missile has been in the air.
By setting up and solving an equation, find the times when the missile reaches a height of 48 feet.

Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Substitute 48 for in

And then solve for Discard any negative root.

John

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