Posted by **Anonymous** on Friday, July 12, 2013 at 3:00pm.

Skeletal remains had lost 81% of the C-14 they originally contained. Determine the approximate age of the bones. (Assume the half life of carbon-14 is 5730 years. Round your answer to the nearest whole number.)

yr

- Calculus -
**Steve**, Friday, July 12, 2013 at 3:04pm
since the half-life is 5730 years, the amount left after t years is

a = (1/2)^(t/5730)

If 81% is lost, that leaves a = 0.19, then just solve for t.

Since 1/8 < .19 < 1/4, the answer should be between 2 and 3 half-lives.

## Answer this Question

## Related Questions

- calculus - Skeletal remains had lost 70% of the C-14 they originally contained. ...
- Math - Skeletal remains had lost 84% of the C-14 they originally contained. ...
- Pre Calculus - The burial cloth of an Egyptian mummy is estimated to contain 56...
- Calculus Help Please!!! URGENT!!!! - Carbon-14 has a half-life of 5700 years. ...
- ChemB - The activity of carbon 14 in living tissue is 15.3 disintegrations per ...
- Algebra - An artifact was found and tested for its carbon-14 content. If 74% of ...
- Precalculus - The burial cloth of an Egyptian mummy is estimated to contain 57% ...
- Precalculus - The burial cloth of an Egyptian mummy is estimated to contain 57% ...
- Calculus 2 (Differentiate & Decay Problem) - I have two problems I need help on...
- half-life - ok so i got... the half life of carbon-14 is 5730 years, the ...

More Related Questions