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September 2, 2014

September 2, 2014

Posted by **Mackenzie** on Thursday, April 12, 2012 at 1:04pm.

- calculus -
**Reiny**, Thursday, April 12, 2012 at 1:11pmif k is the half-life time, then

.8 = 1 (1/2)^(14/k)

log .8 = (14/k)(log .5)

14/k = log.8/log.5

k/14 = log.5/log.8

k = 14(log.5)/log.8 = 43.48

- calculus -
**mackenzie**, Thursday, April 12, 2012 at 1:12pmthanks :D

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