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26 November, 20:39

Select Proportional or Not Proportional to correctly classify each pair of ratios. Proportional Not Proportional 12/30 and 18/45

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  1. 26 November, 20:42
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    12/30 = 18/45 ... cross multiply

    (30) (18) = (12) (45)

    540 = 540 ... proportional

    another way to tell is to see if they are equivalent ... because proportions are nothing but equivalent fractions.

    12/30 = 2/5

    18/45 = 2/5

    so yes, they are proportional
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