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13.12.2019 •
Mathematics
If the half-life of a unstable isotope is 10,00 years and only 1/8 of the radioactive parent remains how old is the sample? a.10,000 b. 20,000 c. 30,000 d. 40,000
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Ответ:
Ответ:
4sqrt5
step-by-step explanation:
the base has dimensions of 8 x 4, so the diagonal is 64 + 16 square rooted or 4sqrt5.