Mathematics, 11.07.2021 19:50, hcortez8846

If the radioactive half-life of a substance is 20 days, and there are 5 grams of it initially. When will the amount left be 2 grams? Round to the nearest tenth of a day.

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If the radioactive half-life of a substance is 20 days, and there are 5 grams of it initially. When...