Wednesday

April 1, 2015

April 1, 2015

Posted by **martha** on Wednesday, April 4, 2012 at 4:59pm.

Hint, half-life for carbon –14 us 5730 years

- math -
**Reiny**, Wednesday, April 4, 2012 at 5:26pmSince this is a "half-life" situation we can use

1/2 or .5 as the base in our exponential equation

5 = 100 (1/2)^(t/5730)

.05 = .5 ^(t/5730)

take ln of both sides

ln 0.05 = (t/5730) ln 0.5

t/5730 = ln 0.05/ln 0.5 = 4.3219...

t = appr 24765 years

- math -
**Bruce**, Wednesday, February 27, 2013 at 10:06pmUnless your teacher gives you 5700 as the half life.

**Answer this Question**

**Related Questions**

College Algebra - Carbon-14 Dating. Only 10% of the carbon-14 in a samll wooden ...

College Algebra - Only 27% of the carbon-14 in a wooden bowl remains. How old is...

College Algebra - Only 34% of the carbon-14 in a wooden bowl remains. How old is...

half-life - ok so i got... the half life of carbon-14 is 5730 years, the ...

half-life - ok so i got... the half life of carbon-14 is 5730 years, the ...

math - 1.The remains of an old campﬁre are unearthed and it is found that...

physical science - a scientist found a fossilized bison. using Carbon-14 dating...

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 ...

science - The half-life of carbon 14 is 5730 years. if a 1 g sample of old ...