A radio substance decays from 60mg to 6mg in 26 years according to the exponential decay model where a is the initial amount and y is the amount remaining after x years.

Find the b-value.

b=

Use the EXACT b-value to write the exponential decay model for this substance with initial amount 60mg, then use that model to find the half-life.

find the half-life. Round to the nearest hundredth of a year, if needed.

half-life= years

#### Top Answer

y = ae -bx , y = amount remaining, a = I initial amount, b = decay rate, and x = time in years 1) y = 6, a = 60, x = 26, b =... View the full answer

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#### Other Answers

Find the b-value. y = a*e -bt Solve for b using decay from 60 to 6 mg in 26 years: 6 = 60e -26b... View the full answer

Using the exponential model equation y=ab x where y= 6mg, a= 60 mg and x = 26 6= 60 x b 26 b 26 = 6/60 b 26 = 0.1 26... View the full answer

The approximate value of b is 0.0886 . The exponential decay... View the full answer