Mathematics, 21.03.2021 14:00 destinybowers18

A stone is thrown upward, its height h meters after t seconds is given by this formular h=30t-5t². Find t when it is at a height of 25m, why are there two answers, what do they mean?

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A stone is thrown upward, its height h meters after t seconds is given by this formular h=30t-5t². F...

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