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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