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Zina [86]
2 years ago
13

Use the fact that the quantity of a radioactive substance after t years is given by

Mathematics
1 answer:
AURORKA [14]2 years ago
6 0

Answer:

  50 kg

Step-by-step explanation:

Put the given numbers into the given formula and do the arithmetic.

  q = q0(2^(-t/k))

  q = (87 kg)(2^(-20/25)) = (87 kg)(0.574349)

  q ≈ 50 kg

The amount remaining after 20 years is about 50 kg.

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