Mathematics, 19.10.2021 14:00, Edith21

A wooden artifact from an ancient tomb contains 20 percent of the carbon-14 that is present in living trees. How long ago, to the nearest year, was the artifact made? (The half-life of carbon-14 is 5730 years.) ___ years
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A wooden artifact from an ancient tomb contains 20 percent of the carbon-14 that is present in livin...