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Algebra
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OpenStudy (anonymous):
Which pair of ratios forms a proportion? 11/36, 121/180 13/21, 39/63 14/23, 70/92 20/51, 4/5
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OpenStudy (anonymous):
basically 2 pairs are in proportion if their cross products are equal. 13/21 , 39/63 we have, 63x13 = 819 and 39x21 = 819 as well. hence ..so for further qns if u can try it urself :)
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