Mathematics, 23.05.2020 04:03 haileysolis5

Element X is a radioactive isotope such that every 90 years, its mass decreases by half. Given that the initial mass of a sample of Element X is 30 grams, how much of the element would remain after 12 years, to the nearest whole number?

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Element X is a radioactive isotope such that every 90 years, its mass decreases by half. Given that...