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11-10-2022
Mathematics

Answered

Alain throws a stone off a bridge into a river below. The stone's height (in meters above the water), xxx seconds after Alain threw it, is modeled by: h(x)=-5x^2+10x+15h(x)=−5x 2 +10x+15h, left parenthesis, x, right parenthesis, equals, minus, 5, x, start superscript, 2, end superscript, plus, 10, x, plus, 15 What is the height of the stone at the time it is thrown? how many seconds after being thrown will the stone hit the water

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