mattskinner
mattskinner mattskinner
  • 12-04-2018
  • Mathematics
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What the answer plz help

What the answer plz help class=

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Аноним Аноним
  • 12-04-2018
initial mass No = 30g, mass at half life (N) = 1/2 *30 = 15, so we have

15 = 30 e^-0.1253t

e^-0.1253t = 0.5

-0.1253t = ln 0.5

t = ln 0.5 / -0.1253

t =  5.5 days  to nearest tenth. Answer
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