Joeyboi2022 Joeyboi2022

17-01-2022
Mathematics

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

How long is DE rounded to the nearest tenth Enter your answer in the box class=

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sqdancefan sqdancefan

20-01-2022

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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