aliceglass20
Solve for x. 8/X=x/11



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completeidiot
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x=X?
or are they different variables?

aliceglass20
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No I meant to make them the same.

completeidiot
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do you know how to cross multiply?

aliceglass20
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forgot

completeidiot
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cross multiplication
ex.dw:1346962247300:dw

aliceglass20
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but how do you know what x and y are?

meylispena
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dw:1346962226871:dw

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

meylispena
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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.

aliceglass20
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I know but in my problem also, how would you multiply two variables if they're not numbers/

aliceglass20
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the square root of 8x11?

completeidiot
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\[X*X=X^2\]

meylispena
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dw:1346962422728:dw

aliceglass20
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So would the answer be either be 44 or 88? @completeidiot @meylispena ?

meylispena
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you have to find the square root of 88.

aliceglass20
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But the only answer choices are 44, 22 square root of 2, 2 square root 22, and 88..

completeidiot
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\[\sqrt{88}=\sqrt{4*22}=\sqrt{4}\sqrt{22}=2\sqrt{22}\]

aliceglass20
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Oh..

aliceglass20
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Thank you:)

meylispena
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what completeidiot said, lol.