## aliceglass20 Group Title Solve for x. 8/X=x/11 2 years ago 2 years ago

1. completeidiot Group Title

x=X? or are they different variables?

2. aliceglass20 Group Title

No I meant to make them the same.

3. completeidiot Group Title

do you know how to cross multiply?

4. aliceglass20 Group Title

forgot

5. completeidiot Group Title

cross multiplication ex.|dw:1346962247300:dw|

6. aliceglass20 Group Title

but how do you know what x and y are?

7. meylispena Group Title

|dw:1346962226871:dw|

8. completeidiot Group Title

it was just an example x and y were just random variables

9. meylispena Group Title

you cross multiply, the 8 with the 11 and the x combine like terms. you have to get rid of the exponent by applying the square root.

10. aliceglass20 Group Title

I know but in my problem also, how would you multiply two variables if they're not numbers/

11. aliceglass20 Group Title

the square root of 8x11?

12. completeidiot Group Title

$X*X=X^2$

13. meylispena Group Title

|dw:1346962422728:dw|

14. aliceglass20 Group Title

So would the answer be either be 44 or 88? @completeidiot @meylispena ?

15. meylispena Group Title

you have to find the square root of 88.

16. aliceglass20 Group Title

But the only answer choices are 44, 22 square root of 2, 2 square root 22, and 88..

17. completeidiot Group Title

$\sqrt{88}=\sqrt{4*22}=\sqrt{4}\sqrt{22}=2\sqrt{22}$

18. aliceglass20 Group Title

Oh..

19. aliceglass20 Group Title

Thank you:)

20. meylispena Group Title

what completeidiot said, lol.