emilyngo2243 emilyngo2243
  • 10-04-2024
  • Mathematics
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Suppose a sample of a certain substance decayed to 69.4% of its original amount after 300 days. What is the half-life (in days) of this substance?
a) 200.68
b) 230.56
c) 163.32
d) 320.47

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