A wooden artifact from an ancient tomb contains 60% of the carbon-14 that is present in living trees. How long ago was the artifact made? (The half-life of carbon-14 is 5730 years. Round your answer to the nearest whole number.)
6876 years since a half life (50%) is 5,730 years, multiply by 2 then by .60 to 6,876
hope I helped :)
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