Asked by Anonymous
A ball is thrown straight up from a rooftop 240 feet high. The formula below describes the​ ball's height above the​ ground, h, in​ feet, t seconds after it was thrown. The ball misses the rooftop on its way down. The graph of the formula is shown. Determine when the​ ball's height will be 120 feet and identify the solution as a point on the graph.
h equals negative 16 t squared plus 8 t plus 240
h equals negative 16 t squared plus 8 t plus 240
Answers
Answered by
Steve
just solve 16t^2+8t+240 = 120
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