A certain radioactive substance has a half-life of 38 hours. The rate of change in the decay is proportional to the current amount, x. What is the amount after 12 hours?

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Q: A certain radioactive substance has a half-life of 38 hours. The rate of change in the decay is…

A: In this we are going to use decay formula so I'm providing hand written solution for this

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A: Explanation of the answer is as follows

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A: Since you posted two questions here, i can answer only first one at a time. Please repost other…

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