3 years ago

Please help im lost.

Mathematics

1 answer:

8_murik_8 [283]3 years ago

8 0

Answer:

$2$

Step-by-step explanation:

$h(t) = - 16 {t}^{2} + 64 \\ \Leftrightarrow 0 = - 16 {t}^{2} + 64 \\ \Leftrightarrow {t}^{2} = 4\Leftrightarrow t = \pm2\Leftrightarrow t = 2 \: (t \geqslant 0)$

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