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Neporo4naja [7]
3 years ago
11

Which pair of ratios form a proportion? A. 2 : 3 and 3 : 4 B. 8 : 12 and 16 : 20 C. 4 : 7 and 12 : 21 D. 9 : 15 and 10 : 16

Mathematics
1 answer:
djyliett [7]3 years ago
6 0
C.
You can simplify 12:21 to 4:7 by dividing 12 by 3 to get 4 and by dividing 21 by 3 to get 7.  Because dividing both those numbers in the one ratio by 3 gives you the other ratio, they are a proportion.
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For this case we have the following inequality:

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To find the solution we follow the steps below:

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Need help with this two step equation
bezimeni [28]

well, do a payments table of values, just like before for each mont hmm let's see

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\bf \stackrel{\textit{total value}}{17900}=\stackrel{\textit{down payment}}{3500}+\stackrel{\stackrel{\textit{payments for}}{\textit{36 months}}}{36p} \\\\\\ 14400=36p\implies \cfrac{14400}{36}=p\implies 400=p

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7 0
2 years ago
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