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OpenStudy (anonymous):
The ratios in an equivalent ratio table are 3:12, 4:16, and 5:20. If the first number in the ratio is 10, what is the second number? Justify your reasoning. please help
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OpenStudy (wendy.ivette11714):
\[3:12 ~for ~example~ is ~3\times4=12\] So all of those the smallest number is being multiplied by 4 So what do we do to 10? @ValMtz0
rebeccaxhawaii (rebeccaxhawaii):
yes so 10 x 4
OpenStudy (wendy.ivette11714):
Yes, we multiply 10*4 and we will get 40! So the last ratio is 10:40 and all of them are proportional.
OpenStudy (anonymous):
thank you both so much!
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