Mathematics, 13.09.2021 19:00 alyssavwil7499

A certain substance has a half-life of 4 minutes. A fresh sample of the substance weighing 90 mg was obtained. After how many minutes will there be 23 mg of the substance remaining?

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A certain substance has a half-life of 4 minutes. A fresh sample of the substance weighing 90 mg was...

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