Friday

November 28, 2014

November 28, 2014

Posted by **chels** on Sunday, May 20, 2012 at 6:54pm.

- Algebra 2 -
**Damon**, Sunday, May 20, 2012 at 8:57pmx = Xi e^-kt

x/Xi = .5 = e^-5730 k

ln .5 = -5730 k

-.69315 = -5730 k

k = 1.21*10^-4

x = Xi e^-1.21*10^-4 t

2 = 50 e^-1.21*10^-4 t

.04 = e^-1.21*10^-4 t

ln .04 = -1.21*10^-4 t

-3.22 = -1.21*10^-4 t

2.66 * 10^4

= 26,600 years

**Answer this Question**

**Related Questions**

oceanography - 14C has a half-life of 5,730 years. If we start with 70 grams of ...

math - the half life of the carbon isotope C14 is about 5700 years. A. about how...

Chemistry - Which radioactive sample would contain the greatest remaining mass ...

calculus - Question: "Plutonium isotope Pu-239 has a half-life of 24,100 years. ...

algebra - An artifact was found and tested for its carbon-14 content. If 84% of ...

algebra - An artifact was found and tested for its carbon-14 content. If 84% of ...

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

Algebra - An artifact was found and tested for its carbon-14 content. If 77% of ...

applied algebra - An artifact was found and tested for its carbon-14 content. If...

earth science - what would be the chart to use for carbon 14 whcih has a half ...