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2 years ago

9

Pls help i already tried to solve

1 answer:

Vikki [24]2 years ago

7 0

Step-by-step explanation:

49 = -16t^2 + 56t

-16t^2 + 56t -49 = 0

(-4t +7) (4t -7) = 0

-4t+7 =0

t = 7/4

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