So today we were doing some practice worksheets in math because our test is tomorrow. He hinted heavily that one of the word problems would show up on our test. But when I went to get my worksheets from my notebook and folder, they were gone! I remember the gist of the problem. It was about exponentials and logs and it talked about King Arthur's round table. It said it was there in the 15th century and archaeologists in the 1950s were trying to see if it was from the 15th century. Here's the only part of the equation I can remember:
.91e ^ -. 000123t
It's the Pe^rt formula, and I'm supposed to be solving for t, which is time. If anything comes before the problems, like A=, I can't remember, but I can't solve the equation without it! Please, someone, anyone, help!
.91e ^ -. 000123t
It's the Pe^rt formula, and I'm supposed to be solving for t, which is time. If anything comes before the problems, like A=, I can't remember, but I can't solve the equation without it! Please, someone, anyone, help!
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I can't tell you what the word problem was. All I can do is show you how to solve A = Pe^(rt) for t.
A = Pe^(rt)
A/P = e^(rt)
ln(A/P) = rt
(ln(A/P)) / r = t
You get a specific value for t only if you know A, P (or at least the ratio A/P) and r.
You could google "king arthur" "round table" "carbon dating" "math problems" (with all the quotes).
Good luck with the test!
A = Pe^(rt)
A/P = e^(rt)
ln(A/P) = rt
(ln(A/P)) / r = t
You get a specific value for t only if you know A, P (or at least the ratio A/P) and r.
You could google "king arthur" "round table" "carbon dating" "math problems" (with all the quotes).
Good luck with the test!