## anonymous one year ago 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

1. marihelenh

x=12. Am I right?

2. anonymous

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

3. anonymous

Geometry is all about proofs my friend

4. anonymous

Hey professor, my favorite guy on here :)

5. mathstudent55

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

6. marihelenh

Are you serious? Was this a challenge even?

7. anonymous

It was and the professor is correct.

8. marihelenh

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

9. anonymous

You didn't show your work.

10. mathstudent55

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.

11. mathstudent55

We must show work because the homework assignment requires it.

12. anonymous

Lol 909 or I am a math nerd

13. anonymous

Math is fun

14. marihelenh

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

15. mathstudent55

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.