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Posted by on Saturday, October 20, 2012 at 12:21am.

The half-life of a radioactive material is about 34.6 years. How much of a 1-gram sample of the material is left after 30 years?

  • College Algebra - , Saturday, October 20, 2012 at 12:34am

    amount = 1 (1/2)^(30/34.6)
    = .5^.8670...
    = .548266 gram

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