## allie_bear22 2 years ago assuming x > 0 what is the simplified fraction form for 5x sqrt 3/ sqrt 48x^2?

1. allie_bear22

@Luigi0210

2. Luigi0210

$\frac{ 5x \sqrt{3} }{ \sqrt{48} x^2 }$ Is this what you mean?

3. allie_bear22

yea

4. Luigi0210

First we need to simplify the bottom radical, can you think of any factors of 48?

5. allie_bear22

2

6. Luigi0210

any factors that involve a 3?

7. Luigi0210

|dw:1369417374702:dw|

8. allie_bear22

3*16=48

9. Luigi0210

Yup, now are any of those a perfect square?

10. allie_bear22

i dont kno what tht means

11. Luigi0210

Like are any multiplied by the sane number.. such as 1*1=1, 5*5=25, 6*6=36, etc

12. allie_bear22

oh then yes

13. Luigi0210

which would that be?

14. allie_bear22

wait there isnt

15. Luigi0210

actually there is.. the 16? 4*4=16

16. allie_bear22

oh kk

17. Luigi0210

Okay now what you would do is bring that out and rearrange the variables to match up|dw:1369417838943:dw|

18. Luigi0210

19. allie_bear22

47. 5 sqrt x/4x

20. allie_bear22

@Luigi0210

21. Luigi0210

Or 5/4x

22. allie_bear22

can u help me with 1 more?

23. Luigi0210

Sure

24. allie_bear22

which of these graphs show the quadratic function y=2x^2+8x+7?

25. allie_bear22

26. allie_bear22

@Luigi0210

27. Luigi0210

I'd say it's graph B

28. allie_bear22

omg thnk you soo much

29. Luigi0210

No prob