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I need help with this

I need help with this-example-1
User Shaundra
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1 Answer

3 votes

Answer:

B

Explanation:

ABEF and BCDE are similar figures (AA postulate ) , then the ratios of corresponding sides are in proportion, that is


(DE)/(EF) =
(BC)/(AB) ( substitute values )


(DE)/(8.5) =
(18.5)/(9) ( cross- multiply )

9 DE = 8.5 × 18.5 = 157.25 ( divide both sides by 9 )

DE = ED ≈ 17.5 ( to the nearest tenth )

User Pablouche
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