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February 28, 2015

February 28, 2015

Posted by **Liz** on Sunday, July 27, 2008 at 12:39pm.

56 days,

7 days,

128 days,

or

8 days

which one is it?

- Math with science -
**drwls**, Sunday, July 27, 2008 at 12:52pm3.125/400 = (1/2)^(t/8)

(if t is in days)

7.8125*10^-3 = (1/2)^(t/8)

t/8 = Log(7.8125*19^-3)/Log(1/2)

= 7

t = 56 days

- Math with science -
**Liz**, Sunday, July 27, 2008 at 1:24pmthank you so much!!

- Math with science -

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