Posted by Abbey on Wednesday, November 5, 2008 at 12:58pm.
In triangle ABC, D is the centroid and M is the midpoint of segment AC. If BD=x+9 and DM=6, find MB. Answer choices: 9 , 3, or 18.

math(Please help Urgent!!)  Reiny, Wednesday, November 5, 2008 at 3:10pm
This is almost identical to the question you posed in
http://www.jiskha.com/display.cgi?id=1225892455
follow the method I described there. 
math(Please help Urgent!!)  kosomak, Sunday, November 8, 2009 at 8:10pm
its B