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creativ13 [48]
3 years ago
9

Y=

Mathematics
1 answer:
mestny [16]3 years ago
8 0

Answer:

  15/16 gram

Step-by-step explanation:

40 days represents 40/8 = 5 half-lives. That is, the quantity remaining is (1/2)^5 = 1/32 of the original amount, so is ...

  (30 g)/32 = 15/16 g

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