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Mathematics 7 Online
OpenStudy (anonymous):

The half-life of Radium-226 is 1590 years. If a sample contains 200 mg, how many mg will remain after 1000 years?

OpenStudy (mayankdevnani):

After 1000 years the 200mg sample will be 137.107 mg. It losses 1mg every 15.9 years. Each year it loose 1/15.9. Multiply this by 1000 and take it from 200.

OpenStudy (mayankdevnani):

ok @torismith

OpenStudy (anonymous):

thank you @mayankdevnani

OpenStudy (mayankdevnani):

welcome

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