The radioactive element polonium decays according to the law given below where Q0 is the initial amount and the time t is measured in days.Q(t) = Q0 · 2−(t/140)If the amount of polonium left after 280 days is 90 mg, what was the initial amount present?

The amount of radioactive element after t days is given by Q(t) = Q0 · 2−(t/140). Where, Q0 is the…

Answered: If the amount of polonium left after…

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If the amount of polonium left after 280 days is 90 mg, what was the initial amount present?

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

The radioactive element polonium decays according to the law given below where

Q₀is the initial amount and the time t is measured in days.

Q(t) = Q₀ · 2^−(t/140)

If the amount of polonium left after 280 days is 90 mg, what was the initial amount present?

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