An unknown radioactive element decays into non-radioactive substances. In 880 days, the radioactivity of a sample decreases by 38 percent. What is the Half-Life of the element?

# An unknown radioactive element decays into non-radioactive substances. In 880 days, the radioactivity of a sample decreases by 38 percent. What is the Half-Life of the element?

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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An unknown radioactive element decays into non-radioactive substances. In 880 days, the radioactivity of a sample decreases by 38 percent. What is the Half-Life of the element?

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