Mathematics, 03.04.2020 04:28, madelyncross24

Some fireworks are fired vertically into the air from the ground at an initial speed of 80 feet for second. The equation for this object’s height h at time t seconds after launch is h = -16t^2 + 80t. How long will it take the fireworks to reach the ground ?

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Some fireworks are fired vertically into the air from the ground at an initial speed of 80 feet for...