Posted by Anonymous on Friday, July 12, 2013 at 3:00pm.
Skeletal remains had lost 81% of the C14 they originally contained. Determine the approximate age of the bones. (Assume the half life of carbon14 is 5730 years. Round your answer to the nearest whole number.)
yr

Calculus  Steve, Friday, July 12, 2013 at 3:04pm
since the halflife 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 halflives.
Answer This Question
Related Questions
 calculus  Skeletal remains had lost 70% of the C14 they originally contained. ...
 Math  Skeletal remains had lost 84% of the C14 they originally contained. ...
 Pre Calculus  The burial cloth of an Egyptian mummy is estimated to contain 56...
 Calculus Help Please!!! URGENT!!!!  Carbon14 has a halflife of 5700 years. ...
 math  A wooden artifact from an ancient tomb contains 70% of the carbon14 that...
 MATH 123  A wooden artifact from an ancient tomb contains 55% of the carbon14 ...
 College Algebra  This exercise uses the radioactive decay model. A wooden ...
 ChemB  The activity of carbon 14 in living tissue is 15.3 disintegrations per ...
 Algebra  An artifact was found and tested for its carbon14 content. If 74% of ...
 Precalculus  The burial cloth of an Egyptian mummy is estimated to contain 57% ...
More Related Questions