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Licemer1 [7]
3 years ago
8

Help? Please. Thanks???

Mathematics
1 answer:
Naya [18.7K]3 years ago
3 0

The height is represented by d.

d = 10 feet

10 = -  16 {t}^{2}  - 7t + 61 \\ 0 =  - 16 {t}^{2}  - 7t + 51

Use quadratic formula:

t = 1.58, -2.02 (reject)

1.58 seconds

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