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kumpel [21]
2 years ago
12

How long is DE rounded to the nearest tenth? Enter your answer in the box.​

Mathematics
1 answer:
pav-90 [236]2 years ago
5 0

Answer:

  7.2

Step-by-step explanation:

Length AB is the difference of the horizontal dimensions shown:

  AB = GF = EF -EG

  AB = 12 -7 = 5

The triangles in the figure are all similar, so we have ...

  DE/DC = CB/AB

  DE/12 = 3/5

  DE = 12(3/5) = 7.2

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