anonymous one year ago Find the value of x and y in the diagram below. (okay so I attempted this problem, but I still did not get the correct answer)

1. anonymous

2. rishavraj

its a rectangle for sure..... do u know to get projections???

3. anonymous

I don't even know what that means :o @rishavraj

4. anonymous

What did you do? It's similar to what we did earlier. :)

5. anonymous

I did 9(x)= 9 sqrt 2

6. anonymous

|dw:1438480912945:dw|

7. anonymous

So 9 is the $a \sqrt{3}$ because it is the opposite of 60 degrees.

8. anonymous

So I do 9 sqrt 3?

9. anonymous

No. Because 9 is not the a. You need to find the a first.

10. anonymous

So you must equal 9 to a square root of 3.

11. anonymous

$\huge 9=a \sqrt{3}$

12. anonymous

Now solve for a.

13. anonymous

Oh brothers.. how do I solve for a if it's not a legit numbers? unless 2 is a..

14. anonymous

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15. anonymous

ohhh I think I might get it. So y must equal 4.5

16. anonymous

Hmmm idk what you're talking about. :D

17. anonymous

So a= 9/sq rt of 3 but you still need to rationalize it. You can't have a square root in the denominator.

18. anonymous

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19. anonymous

You think you can simplify $\frac{ 9\sqrt{3} }{ 3 }$

20. anonymous

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21. anonymous

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22. anonymous

After that, you will find 2a or x in your problem. $3\sqrt{3}\times2=?$

23. anonymous

ohh so I got 6.92820323028

24. anonymous

Oh you don't have to find the exact value. Look at your choices.

25. anonymous

To multiply this, what is 3 times 2? Then simply put the square root of 3.

26. triciaal

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27. anonymous

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28. anonymous

I got 10.3923048454

29. anonymous

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30. anonymous

What is 3 times 2?

31. anonymous

6

32. anonymous

Then add the square root of 3. Then that's it.

33. anonymous

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34. anonymous

I give up it's all coming out in decimals :o

35. anonymous

That is simply 6 sq root of 3. You don't have to use the calculator.

36. anonymous

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37. triciaal

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