Challenge! Ready? What is the value of x, given that Line PQ is parallel to Line BC ? http://assets.openstudy.com/updates/attachments/54edfb85e4b055f23ccc9b9e-letslearn2000-1424882573300-15.png

Question

marihelenh · Answer

x=12. Am I right?

anonymous · Answer

you have to show your work; otherwise you could have cheated ;)

anonymous · Answer

Geometry is all about proofs my friend

anonymous · Answer

Hey professor, my favorite guy on here :)

mathstudent55 · Answer

$\dfrac{8}{x} = \dfrac{12}{18} $

$x = \dfrac{8 \times 18}{12} $

$x = 12$

marihelenh · Answer

Are you serious? Was this a challenge even?

anonymous · Answer

It was and the professor is correct.

marihelenh · Answer

He was correct. But you know what else? I was correct, too, even before he came on.

anonymous · Answer

You didn't show your work.

mathstudent55 · Answer

This challenge is a thinly disguised way of getting people to your homework.
Just call every problem a challenge, and someone will take it on. 
After a while, the entire homework assignment has been done.

mathstudent55 · Answer

We must show work because the homework assignment requires it.

anonymous · Answer

Lol 909 or I am a math nerd

anonymous · Answer

Math is fun

marihelenh · Answer

So, why even do it then? What is your reasoning behind that? If they aren't willing to even ask it as a question, why do you still give them an answer? @mathstudent55

mathstudent55 · Answer

I am hoping she at least learns something.
I don't just give a final answer.
I solve the entire problem step by step.
She has the option of following the solution and learning something from it.