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OpenStudy (anonymous):
a 18 gram sample of a substance thats used to detect explosives has a k-value of 0.1226 find the substance's half life, in days round your answer to the nearest tenth pleaseee helpp IM BEING TIMED!
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OpenStudy (anonymous):
ok here we go again
OpenStudy (anonymous):
\[.5=e^{-.1226t}\] \[\frac{ln(.5)}{-.1226}=t\]
OpenStudy (anonymous):
rounded to the nearsest tenth i get 5.7
OpenStudy (mertsj):
it's an integral problem. I don't think you saw it.
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OpenStudy (anonymous):
link@mertsj
OpenStudy (anonymous):
IT WAS RIGHTTTTTT! 0THANK YOU
OpenStudy (anonymous):
imagine. thank the lord
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