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Mathematics 23 Online
OpenStudy (anonymous):

which ratios form a proportion A 4/9,12/25 B 3/7,18/42 C 5/11,20/45 D 5/8,15/25

OpenStudy (anonymous):

Put them into fractions and cross multiply each of them if the numbers equal the ssame thing, then it's a proportion.

sammixboo (sammixboo):

Here, let's start with choice A|dw:1417710273255:dw|

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