sasyakoneru2009 sasyakoneru2009

29-10-2022
Mathematics

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A sample of a radioactive isotope had an initial mass of 490 mg in the year 1995 and decays exponentially over time. A measurement in the year 1998 found that the sample's mass had decayed to 240 mg. What would be the expected mass of the sample in the year 2005, to the nearest whole number?

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