please help me and explain. what is the value of [tex] \frac{x}{y} [/tex] if [tex] \frac{28}{ x^{2} } = \frac{7}{xy} [/tex]

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21-10-2017
Mathematics

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please help me and explain. what is the value of [tex] \frac{x}{y} [/tex] if [tex] \frac{28}{ x^{2} } = \frac{7}{xy} [/tex]

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chi3fcomm5nd chi3fcomm5nd · Answer 1 · 2017-10-21T04:08:21+02:00

chi3fcomm5nd chi3fcomm5nd

21-10-2017

[tex] \frac{28}{x^2} = \frac{7}{xy} [/tex]
multiplying both sides by x^2
[tex] 28=\frac{7x^2}{xy} [/tex]
simplifying
[tex]28= \frac{7x}{y} [/tex]
dividing by 7
[tex] \frac{28}{7}= \frac{x}{y} [/tex]

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