mrsbieber6729 mrsbieber6729

11-11-2018
Mathematics

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15 grams of a radioactive substance decayed 11% over the course of 3 weeks. How many grams of the substance were left after the 3 weeks?

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trevordoyleione trevordoyleione

11-11-2018

15 grams lost 11%

get 11% of 15 = .11 times 15 = 1.65

now subtract

15 - 1.65 = 13.35 grams left

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