College Algebra

Carbon-14 Dating.

Only 10% of the carbon-14 in a samll wooden bowl remains. How old is the bowl?

Half life of carbon is 5700 years.

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asked by Vince
  1. .1 = .5^(t/5700)
    t/5700 = log .1/log .5
    t = 18935

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    posted by Reiny
  2. 18936 years

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    posted by Sam

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