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4 years ago

A certain radioactive isotope decays at a rate of 0.3% annually. Determine the half-life of this isotope, to the nearest year

Mathematics

1 answer:

Liono4ka [1.6K]4 years ago

7 0

This could be rephrased as:

You start with 100 grams of a substance. One year later you have 70 grams. What is the half-life?

We need this formula:

half-life = (time * natural log (2)) / natural log (beginning amount / ending amt)

half-life = (1 year * .69315) / natural log (100 / 70)

half-life = (.69315) / 0.35667494396

half-life = 1.9433661145 years

Rounding to nearest year half-life = 2 years

Sourse: https://www.1728.org/halflif2.htm

(See problem 3)

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Step-by-step explanation:

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3 years ago

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Answer:

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<h3>What is Equation?</h3>

Equations are mathematical statements containing two algebraic expressions on both sides of an 'equal to (=)' sign.

Here, Let the number of 4 wheel skates in display be x

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3 years ago

A certain radioactive isotope decays at a rate of 0.3​% annually. Determine the ​half-life of this​ isotope, to the nearest year

A certain radioactive isotope decays at a rate of 0.3% annually. Determine the half-life of this isotope, to the nearest year