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In a lab experiment, the decay of a radioactive isotope is being observed. At the beginning of the first day of the experiment the mass of the substance was 900 grams and mass was decreasing by 15% per day. Determine the mass of the radioactive sample at the beginning of the 9th day of the experiment. Round to the nearest tenth

User Obizues
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2 Answers

7 votes

Answer:

13

Explanation:

900× .15 × 9

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User Skittles
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4 votes
Your answer would be 15:)
User Narm
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