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

Question

asked Oct 26, 2023 164k views

1 Answer

Gerald Ferreira · Answer 1 · 2023-10-31T00:32:31+0000

Answer:

7.2

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