2. Assume that radium disintegrates/decomposes at a rate proportional to the amount present. If 100 mg reduces to 20% in 100 yrs., in how many milligrams will remain at the end of 1010 years? Find the half-life.

2. Assume that radium disintegrates/decomposes at a rate proportional to the amount present. If 100 mg reduces to 20% in 100 yrs., in how many milligrams will remain at the end of 1010 years? Find the half-life.

College Algebra

10th Edition

ISBN:9781337282291

Author:Ron Larson

Publisher:Ron Larson

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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Question

Representation of the unknown:
DE Model:
Solution:
Final answer/s:
Conclusion/s:
Table:

2. Assume that radium
disintegrates/decomposes at a rate proportional to the amount present. If
100 mg
reduces to 20% in 100 yrs., in how many milligrams will remain at the end of 1010
years? Find the half-life.

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