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Posted by **Roger** on Wednesday, January 7, 2009 at 8:51pm.

- MATH PLEASE HELP! -
**Reiny**, Wednesday, January 7, 2009 at 9:25pmP = k/V

when P=20, V=500, so

20 = k/500

k = 10000

then P = 10000/V

if V - 400,

P = 10000/400 = 25

don't forget the units

- MATH PLEASE HELP! -
**MAYA**, Wednesday, January 7, 2009 at 9:33pmPROOF: 2/LOG A BASE 9 - 1/ LOG A BASE 5 = 3/ LOG A BASE 3

- MATH PLEASE HELP! -
**Roger**, Wednesday, January 7, 2009 at 9:37pmthanks but how did you get 1000 by dividing k by 500?

- MATH PLEASE HELP! -
**Reiny**, Wednesday, January 7, 2009 at 9:40pmI had 20 = k/500

now multiply both sides by 500

20(500) = (k/500)(500

10000=k

the 500's canceled on the right side

- MATH PLEASE HELP! -
**Roger**, Wednesday, January 7, 2009 at 10:01pmthank you so much! i really appreciate it!

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