Twenty percent of a radioactive substance decays in ten years by what percent does the substance decay each year

The substance decays each year if twenty percent of a radioactive substance decays in ten year.

Further explanation:

The exponential decay formula can be expressed as follows,

Here, represents the initial amount, is the final amount, is the rate of decay, and represents the time.

Given:

Twenty percent of a radioactive substance decays in ten year.

Explanation:

Consider the initial amount of the radioactive substance be

The final amount of the radioactive substance is

The rate of decay can be obtained as follows,

The rate of decay is

The substance decays each year if twenty percent of a radioactive substance decays in ten year.

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Answer details:

Grade: High School

Subject: Mathematics

Chapter: Exponential decay

Keywords: twenty percent, radioactive substance, decays, ten years, each year, rate of decay each year, substance.

unpaid balance is : $149.99-$50 = $99.99 new balance = 149.99+2.62-50 = $102.61 finance charge = 99.99- 0.21/12= $1.75 new balance = 99.99+1.75 = $101.74 average daily balance method average daily balance= 3399.70/30 = $113.32 finance charge = $ 0.21/12ă—113.32 = $1.98 new balance = $149.99-50+1.98 = $101.97