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4. If 70% of certain radioactive material decays after 200 years answer the following a. What is the rate of decay for the material? b.

4. If 70% of certain radioactive material decays after 200 years answer the following a. What is the rate of decay for the material? b. What is the half-life of the material? 3655 Tryban Ra Cheboygan I'm at mary's dog sittin place

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