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OpenStudy (anonymous):
Suppose that a substance decays from 10g to 3g in 20 days. Show how to find the half-life of the substance.
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OpenStudy (anonymous):
3=10(.5)^t solve for t 3/10=.5^t log(3/10)=t*log(.5) solve for t. Hope you can do that.
OpenStudy (anonymous):
I came up with 1.7372 does that look right to you?
OpenStudy (anonymous):
yeah. good job.
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