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Mathematics 9 Online
OpenStudy (anonymous):

The centroid formula on this website is wrong http://www.intmath.com/applications-integration/5-centroid-area.php It says xbar = integral (x*(y2-y1)) / integral (y2-y1)

OpenStudy (anonymous):

perhaps, not a real fan of that particular formula for x bar. I use this one: |dw:1318647337742:dw|

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