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October 30, 2014

Homework Help: Math

Posted by Annie on Wednesday, September 19, 2012 at 3:46pm.

The half-life of radioactive strontium-90 is approximately 32 years. In 1961, radioactive strontium-90 was released into the atmosphere during testing of nuclear weapons, and was absorbed into people's bones. How many years does it take until only 8 percent of the original amount absorbed remains?

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