SOLUTION: A sample of radioactive substance decayed according to y=100(10)^-0.4x
where y was the mass in grams and x was the time in hours after the original measurement.
(a) How much was
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Question 890324: A sample of radioactive substance decayed according to y=100(10)^-0.4x
where y was the mass in grams and x was the time in hours after the original measurement.
(a) How much was present at the original measurement? (Hint: Let x=0.)
(b) How much was in the sample to the nearest gram after 3 hours?
(c] How much was present to the nearest gram after 5 hours?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
The formula should really be
Just substitute the given values of x to answer (a), (b), and (c).
Table of common logarithms or scientific calculator are the tools to use
Using (b) as example,
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