Mathematics, 13.09.2021 03:10, Mayrah7486

Hi, I need help with this question and I need an explanation pls. Please don't copy the answer from the internet. Here's the question: A ball is thrown into the air from the top of a building. The height, h(t), of the ball above the ground t seconds after it is known can be modeled by
h(t) =-16t²+16t+80. How many seconds after being thrown will the ball hit the ground?

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