Mathematics, 13.05.2021 17:50 itsdria

Element X is a radioactive isotope such that every 13 years, its mass decreases by half. Given that the initial mass of a sample of Element X is 90 grams, how long would it
be until the mass of the sample reached 62 grams, to the nearest tenth of a year?

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Element X is a radioactive isotope such that every 13 years, its mass decreases by half. Given that...