Respuesta :

texaschic101
A. 4/9 = 12/25
    cross multiply
    (4)(25) = (9)(12)
    100 = 108.....this does not form a proportion

B. 3/7 = 18/42
    cross multiply
    (3)(42) = (18)(7)
    126 = 126......this forms a true proportion <==

C. 5/11 = 20/45
    cross multiply
    (5)(45) = (11)(20)
     225 = 220...this does not form a proportion

D. 5/8 = 15/25
    cross multiply
    (8)(15) = (5)(25)
     120 = 125....this does not form a proportion

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