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OpenStudy (anonymous):
A radioactive substance has a half life of 20 days. What's its rate of decay at 100 days.
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OpenStudy (anonymous):
The formula for the decay must be A(t)=A(1/2)^5
OpenStudy (anonymous):
So i figured taking the derivative of this should give me the answer. I got 1/32. But that's not a decay rate is it?
OpenStudy (anonymous):
Seriously?
OpenStudy (anonymous):
I need help verifying if my derivative is correct.
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OpenStudy (anonymous):
I can find Wikipedia articles myself.
OpenStudy (anonymous):
OpenStudy (anonymous):
Part b) ii) is where I'm struggling
OpenStudy (anonymous):
Help with the problem would be appreciated.
OpenStudy (anonymous):
Part b) ii) is where I'm struggling
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