Mathematics

10 November, 22:43

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 400 grams

and mass was decreasing by 13% per day. Determine the mass of the radioactive

sample at the beginning of the 12th day of the experiment. Round to the nearest tenth

(if necessary).

Answer:

+3

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