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daser333 [38]
2 years ago
8

Suppose that 13 inches of wire costs 78 cents.

Mathematics
1 answer:
GarryVolchara [31]2 years ago
5 0

Answer:

$0.42

Step-by-step explanation:

create a proportion:

13/.78 = 7/x

cross-multiply to get:

13x = 7(.78)

13x = 5.46

x = 5.46/13

x = .42

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