The decay rate of a certain radioactive isotope is 13% per year. a) What is its half-life? Round to the nearest tenth of a year. b) For how many years the radioactive substance will decrease from 10 grams to 3 grams? round your answer to the nearest tenth of a year.
The decay rate of a certain radioactive isotope is 13% per year. a) What is its half-life? Round to the nearest tenth of a year. b) For how many years the radioactive substance will decrease from 10 grams to 3 grams? round your answer to the nearest tenth of a year.
Chapter5: Exponential And Logarithmic Functions
Section: Chapter Questions
Problem 28T: The half-life of radioactive actinium ( 227AC ) is 21.77 years. What percent of a present amount of...
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The decay rate of a certain radioactive isotope is 13% per year.
a) What is its half-life? Round to the nearest tenth of a year.
b) For how many years the radioactive substance will decrease from 10 grams to 3 grams? round your answer to the nearest tenth of a year.
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