An Anthropologist finds bones that her Instruments measure it as 0.921% of the amount of carbon- 14 the bones would have contained when the person was alive. How long ago did the person die?

Question

The half life, t 1/2, carbon 14 is 5,730 years. Round To the nearest thousands

Reiny · Answer

1(1/2)^(t/5730) = .921 .5^(t/5730) = .921 take log of both sides and use log rules ... (t/5730) log .5 = log .921 take over

Amy · Answer

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