Tuesday
July 7, 2015

Homework Help: Math

Posted by Darwin12 on Friday, December 14, 2012 at 2:34pm.

In 10 years, 25% of a radioactive substance decays. What is its half-life?

A. 25 years
B. 24 years
C. 20 years
D. 29 years

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Members