Wednesday

July 30, 2014

July 30, 2014

Posted by **Yvonne** on Monday, April 16, 2012 at 2:14pm.

- College Math -
**Steve**, Monday, April 16, 2012 at 3:42pmIf you start with amount P, then after t years, R, the fraction remaining, is

R = 2^(-t/5730)

See how that works? Every 5730 years, the power of 2 goes down by 1.

2^(-t/5730) = .88

-t/5730 = ln(.88)/ln(2) = −0.321928095

t = 5730 * 0.321928095

t = 1844.64798435

or, to the nearest 100 years, 1800.

**Related Questions**

math - An artifact was found and tested for its carbon-14 content. If 79% of the...

math - An artifact was found and tested for its carbon-14 content. If 76% of the...

math - An artifact was found and tested for its carbon-14 content. If 83% of the...

math - An artifact was found and tested for its carbon-14 content. If 83% of the...

math - An artifact was found and tested for its carbon-14 content. If 76% of the...

math - An artifact was found and tested for its carbon-14 content. If 81% of the...

math - An artifact was found and tested for its carbon-14 content. If 88% of the...

Math - An artifact was found and tested for its carbon-14 content. If 88% of the...

alegbra - An artifact was found and tested for its carbon-14 content. If 75% of ...

Alegbra - An artifact was found and tested for its carbon-14 content. If 75% of ...