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sudi760mba
- Senior | Next Rank: 100 Posts
- Posts: 85
- Joined: Wed Aug 13, 2008 2:21 am
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I noticed this PS question and wanted to get some feedback:
(1/5)^m * (1/4)^18 = 1 /2(10)^35
so I approached it this way:
i)5^-m * 4 ^ -18 = 2(10)^-35
ii)20 ^ (-m + -18) = 2(10)^-35
iii)2(10)^(-m - 18) = 2(10)^-35
iv) -m - 18 = -35
v) -m = -17
m = 17 which is one of the answer choices. Is this correct?
Thank you.
(1/5)^m * (1/4)^18 = 1 /2(10)^35
so I approached it this way:
i)5^-m * 4 ^ -18 = 2(10)^-35
ii)20 ^ (-m + -18) = 2(10)^-35
iii)2(10)^(-m - 18) = 2(10)^-35
iv) -m - 18 = -35
v) -m = -17
m = 17 which is one of the answer choices. Is this correct?
Thank you.
