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OpenStudy (anonymous):
Which pair of ratios form a proportion? 2 : 3 and 3 : 4 8 : 12 and 16 : 20 4 : 7 and 12 : 21 9 : 15 and 10 : 16
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OpenStudy (calculusxy):
You are really looking for equivalent "fractions"
OpenStudy (calculusxy):
\[\frac{ 2 }{ 3 } \neq \frac{ 3 }{ 4 }\]
OpenStudy (britnee_paige99):
4 : 7 and 12 : 21 are equal
OpenStudy (anonymous):
yeah 4:7 and 12:21
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