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Mathematics 13 Online
OpenStudy (anonymous):

Which one of the following statements expresses a true proportion? A. 54:9 = 6:3 B. 2:1 = 1:2 C. 7:9 = 8:9 D. 3:4 = 9:12

OpenStudy (anonymous):

D

OpenStudy (anonymous):

Be sure to explain why @Auxuris

OpenStudy (anonymous):

D because it has been reduced from 54:9

OpenStudy (anonymous):

The answer is D, because 3:4 is the same as 9:12. If you multiply 3 and 4 by 3, you get 9 and 12 respectively. Therefore, 3:4 is the same as 9:12, a true proportion.

OpenStudy (anonymous):

Yeah, a reduction.

OpenStudy (anonymous):

Was I of any help?

OpenStudy (anonymous):

thank you very much im not so good at math. thank you for the help i think these are the hardest ive been through yet

OpenStudy (anonymous):

no, spray adam.bloedel is correct

OpenStudy (anonymous):

I'm just saying, isn't a reduction the same as the true proportion?

OpenStudy (anonymous):

hmm. but none of the others are proportional reductions anyway

OpenStudy (anonymous):

Oh.

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