# SOLUTION: Near Three Rivers, NM, there is an archaeological site containing petroglyphs. In 1998, archaeologists found that the amount of carbon-14 in the petroglyphs was 88.5%. Determine th

Algebra ->  Algebra  -> Exponential-and-logarithmic-functions -> SOLUTION: Near Three Rivers, NM, there is an archaeological site containing petroglyphs. In 1998, archaeologists found that the amount of carbon-14 in the petroglyphs was 88.5%. Determine th      Log On

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 Click here to see ALL problems on Exponential-and-logarithmic-functions Question 633093: Near Three Rivers, NM, there is an archaeological site containing petroglyphs. In 1998, archaeologists found that the amount of carbon-14 in the petroglyphs was 88.5%. Determine the approximate age of the petroglyphs. Show the carbon-14 dating model for the age of the petroglyphs and define variables. Explain how you found your answer. There are directions for how to type math characters in the Resource Center that will show you show to enter exponents and fractions. Answer by ankor@dixie-net.com(15622)   (Show Source): You can put this solution on YOUR website!In 1998, archaeologists found that the amount of carbon-14 in the petroglyphs was 88.5%. Determine the approximate age of the petroglyphs. Show the carbon-14 dating model for the age of the petroglyphs : Radio active decay formula A = Ao(2^(-t/h), where: A = remaining amt after t years Ao = initial amt t=0 t = time in yrs h = half-life of substance t = time of decay : A = .885 Ao = 1 h = 5730, the half life of carbon-14 : 1*2^(-t/5730) = .885 using nat logs *ln(2) = ln(.885) = = -.17625 t = -5730 * -.17625 t = 1010 years is the age of the petro-whatevers