Homework Help: MATH help

Posted by HM on Tuesday, September 27, 2011 at 10:20am.

a certain radioactive isotope has a half life of approx 1,300 years .
How many years to the nearest year would be required for a given amount of this isotope to decay to 55% of that amount.

So I am not sure where to put the 1,300

1,300=2600*e^t

or A=x*e^1300

No one has answered this question yet.

Answer this Question

Related Questions

Math - a certain radioactive isotope has a half life of approx 1,300 years . ...
MATH help - a certain radioactive isotope has a half life of approx 1,300 years...
MATH help - a certain radioactive isotope has a half life of approx 1,300 years...
college - a certain radioactive isotope has a half life or 850 years.how many ...
Chemistry - Which radioactive sample would contain the greatest remaining mass ...
Math - D.E.Q. - The half-life of a radioactive isotope is the amount of time it ...
Math - How do I solve this if there is no equation to this 1. The population of ...
precal - If the half-life of a certain radioactive substance is 2000 years, ...
Math - In 10 years, 25% of a radioactive substance decays. What is its half-life...
science/math - write and solve an algebraic equation to find the original mass ...

For Further Reading

First Name:
School Subject:
Answer: