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Andrei [34K]
2 years ago
14

What is the expanded notation for 15,729

Mathematics
1 answer:
svp [43]2 years ago
8 0
10000 + 5000 + 700 + 20 + 9
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The percentage of the radioactive isotope left is 25.0000%.

<h3>What is the half life?</h3>

The half life of a radioactive isotope is the time that will elapse before only half of the number of original isotopes will remain.

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