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Mathematics 9 Online
OpenStudy (anonymous):

Calculate the value of OK

OpenStudy (anonymous):

OpenStudy (anonymous):

it's a proportion. \[\frac{ 2 }{ 4 } = \frac{ x }{ 17 }\] cross multiply 2*17 = 4*x 34 = 4x x = 17/2 = 8.5

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