Advanced Placement (AP), 09.07.2020 02:01, gebradshaw2005
college algebra - please help The half-life for thorium-227 is 18.72 days. The amount A (in grams) of thorium-227 after t days for a 10-gram sample is given by A(t)=10⋅0.5^t/18.72 How long will it take before 4 grams of thorium-227 is left in the sample? Round your answer to the hundredths place. _days
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college algebra - please help The half-life for thorium-227 is 18.72 days. The amount A (in grams) o...
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