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OLEGan [10]
3 years ago
12

The half-life of a radioactive substance is 11 days. After 12 days a sample of the substance has been reduced

Mathematics
1 answer:
sergiy2304 [10]3 years ago
8 0
The mass is 48.3 that’s it
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barxatty [35]

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8x-12=4x

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Hope helps :3

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2 years ago
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