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Mathematics 7 Online
OpenStudy (anonymous):

Can anyone tell me what formula was used to get this answer? http://www.jiskha.com/display.cgi?id=1348079533

OpenStudy (anonymous):

or if theres an easier way of solving this, let me know!

OpenStudy (anonymous):

the answer in the link is correct though. i just wanna know how it was done.

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