math
posted by helpasap .
#1)Which ratio forms a proportion? Use cross products to test each pair.
(A)15/40, 35/90
(B)18/22, 45/55
(C)12/55, 33/121***
(D)17/31, 32/45
#2)Which ratio forms a proportion with 20/30? Use equivalent ratios to test each pair.
(A)16/24
(B)10/20***
(c)17/51
(d)15/60
#3)Which ratios form a proportion? Use equivalent ratios to test each pair.
(A)4/9, 2/3
(B)6/15,9/12***
(C)12/16, 15/20
(D)18/20, 24/30.
Are my answers correct? If not, which ones are wrong?

#1 I meant to put (C)15/55 not the 12.

12/55 = 33/121
1452 = 1815  Nope!
2, no
3. no 
OK so if I did all wrong, #1 would be A. #2, D, and #3 also D.. Right? @Ms.Sue

Please show your work for these problems.

this site is confusing
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