SOLUTION: Polygons ABCD and AFGE are similar. AD = 12 and AE = 6. If AF = 7 what is the length of AB? http://4.bp.blogspot.com/-ZrLpKpV4BZE/Tg0VwfZz1PI/AAAAAAAAAAM/cE0AV9wqtG8/s320/IMG_20

Algebra ->  Equations -> SOLUTION: Polygons ABCD and AFGE are similar. AD = 12 and AE = 6. If AF = 7 what is the length of AB? http://4.bp.blogspot.com/-ZrLpKpV4BZE/Tg0VwfZz1PI/AAAAAAAAAAM/cE0AV9wqtG8/s320/IMG_20      Log On


   

Question 466269: Polygons ABCD and AFGE are similar. AD = 12 and AE = 6. If AF = 7 what is the length of AB?
http://4.bp.blogspot.com/-ZrLpKpV4BZE/Tg0VwfZz1PI/AAAAAAAAAAM/cE0AV9wqtG8/s320/IMG_20110630_145004.jpg
There is a picture of my problem. Thank you!
-Dimitri R.
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
%28AD%29%2F%28AE%29+=+%28AB%29%2F%28AF%29 by similarity.
==> 12%2F6+=+x%2F7 ==> 2 = x/7 ==> x = 14.