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September 2, 2015

Homework Help: math

Posted by hannah on Tuesday, November 12, 2013 at 6:52pm.

1.The remains of an old campfire are unearthed and it is found that there is only 80% as much radioactive carbon-14 in the charcoal samples from the campfire as there is in modern living trees. If the half-life of carbon- 14 is 5730 years, how long ago did the campfire burn?

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