A sample of a radioactive substance decayed to 92% of its original amount after a year. (Round your answers to two decimal places.) (a) What is the half-life of the substance? Xyr (b) How long would it take the sample to decay to 5% of its original amount? Xyr

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Q: A sample of a radioactive substance decayed to 92% of its original amount after a year. (Round your…

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Q: practice question 18

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Q: Suppose a sample of a certain substance decayed to 69.6% of its original amount after 300 days.…

A: We will use the formula to solve the problem.

Q: A sample of a radioactive substance decayed to 92% of its original amount after a year. (Round your…

A: Firstly, we can set up exponential equation we can use formula