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allsm [11]
4 years ago
10

Pls help and show some steps

Mathematics
1 answer:
Vikentia [17]4 years ago
6 0
To solve this equation, simply plug in the value of h = 0 feet, as this would be the height the object will be on the ground. It would be 0.

Afterwards, solve the equation by factoring the quadratic function.

16t^2 - 64t - 80 = 0.
8(2t^2 - 8t - 10) = 0

2t^2 - 10t + 2t - 10 = 0

2t(t - 5) + 2(t - 5) = 0

(2t + 2)(t - 5) = 0

T = 5 and t = -1.

Since time can’t be negative, there is only one solution, t = 5.

It would be about 5 seconds.
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