Homework Help Forum: 9th grade

Posted by Anonymous on Thursday, November 5, 2009 at 9:41pm.

In triangle ABC, centroid D is on median line. AD=x+4 and DM=2x-4. Find AM

• 9th grade - Reiny, Thursday, November 5, 2009 at 10:50pm

  The centroid divides a median in the ration of 2:1, the longer part towards the vertex. so (x+4)/(2x-4) = 2/1 solving.... x = 4 then AM = x+4 + 2x-4 = 3x = 12

  
  

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