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3 years ago

Question

Mathematics

1 answer:

amid [387]3 years ago

7 0

Answer:

42*6=252

252/25=10.08

≈10 classes in Trang's school

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<h2>Explanation:</h2><h2></h2>

Here we know that Margie is standing on a bridge looking at the river. She throws a rock over the bridge with an initial velocity of 60 ft/sec. The height, h, of the rock at the rime t seconds after it was thrown can be modeled by the equation:

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To calculate how long will it take for the rock to reach the surface of the water, we need to set $h(t)=0$ . So:

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