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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

Answer :

Ugena

Answer:

13

Step-by-step explanation:

900× .15 × 9

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Your answer would be 15:)

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