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## Reaper534 Group Title Find x. one year ago one year ago

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1. Reaper534
2. Reaper534

@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. Reaper534

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. Reaper534

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. Reaper534

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. Reaper534

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

16. Mertsj

no.