A 13 foot long pole leans against a wall. The bottom is 5 feet from the wall. How much farther should the bottom be pulled away from the wall so that the top moves the same amount down the wall?

Question

anonymous · Answer

|dw:1361549241961:dw|

anonymous · Answer

|dw:1361549379470:dw|

anonymous · Answer

AD=BC=X
AB=CD=13
Do you understand till this step?

anonymous · Answer

Do you know how to do next?

anonymous · Answer

I don't understand... at all. =[

anonymous · Answer

can you understand the pic?

anonymous · Answer

can you tell me which exact point that you don't figure out?

anonymous · Answer

I don't understand the application of this particular question into an equation. If that makes any sense. I understand that the length of the pole wouldn't change. Just clueless.

anonymous · Answer

you know how I got 12, right?

anonymous · Answer

then (12-x)^2+(5+x)^2=13^2
can you agree with this?

anonymous · Answer

you don't need equation. 
or does the question ask you to use euqation?

anonymous · Answer

Ohhhhhhh....I get it now!

anonymous · Answer

No it doesn't need the equation just the answer. And it's 7 feet right?

anonymous · Answer

yeah, that's great