marabelknap marabelknap

20-01-2015
Mathematics

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what is the value of this proportion? 8/12 = 10/n

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konrad509 konrad509

20-01-2015

[tex]\dfrac{8}{12}=\dfrac{10}{n}\\ \dfrac{2}{3}=\dfrac{10}{n}\\ 2n=30\\ n=15[/tex]

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20-01-2015

[tex]\frac{8}{12}=\frac{10}{n}\ \ \ \ \ \ | cross\ multiplication\\\\ 8n=10*12\\\\ 8n=120\ \ \ \ | divide\ by\ 8\\\\ n=15[/tex]

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