## anonymous 3 years ago Find x.

1. anonymous
2. anonymous

@Mertsj

3. Mertsj

Let's get rid of the one triangle that we don't need for this one.

4. Mertsj

|dw:1359241647844:dw|

5. Mertsj

Can you solve that equation for x?

6. anonymous

i divide 18 by 2 and get 9 then ill get 9sqrt2

7. Mertsj

$x \sqrt{2}=18$

8. Mertsj

Divide both sides by sqrt 2

9. anonymous

18sqrt2/sqrt 4

10. Mertsj

$\frac{x \sqrt{2}}{\sqrt{2}}=\frac{18}{\sqrt{2}}$

11. Mertsj

$x=\frac{18}{\sqrt{2}}$

12. Mertsj

Now simplify. Multiply numerator and denominator by sqrt2

13. anonymous

i get 18sqrt2/sqrt4 and then i get sqrt18/4

14. Mertsj

$\frac{18}{\sqrt{2}}\times \frac{\sqrt{2}}{\sqrt{2}}=\frac{18\sqrt{2}}{2}=9\sqrt{2}$

15. anonymous

ohh if a sqrt in on numerator and a other on denominater i can cancell each other

16. Mertsj

no.