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Mathematics, 05.04.2020 00:51 Aliciaonfleek

A spaceship launched into the air has a height (feet) at any given time (seconds) as h=-t^2+10t until it hits the ground. At what time(s) is it at a height of 9 feet above the ground

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A spaceship launched into the air has a height (feet) at any given time (seconds) as h=-t^2+10t unti...

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