Essay
The half-life of a certain radioactive substance is 5 days. The initial size of a sample is 10 grams.(a) Find the amount of the substance remaining after 20 days.(b) Find the amount of the substance remaining after t days.(c) Use a graph to estimate, to the nearest 0:01 gram, the amount remaining after 14 days.(d) Use the graph to estimate, to the nearest 0:1 day, the amount of time required for the mass of the substance to be reduced to 0:1 gram.
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(a) The half-life is 5 days, so 20 days ...View Answer
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