Question

What is the length of DE

Answer 1

the answer is B. 6 , this matches  the ratio

Answer 2

Option B. The length of DE is
`6\ units`

Explanation:

we know that

The triangle XYZ and DEF are similar triangles

therefore

The ratio of their corresponding sides is equal

`(12)/(8)=(9)/(x) \\ \\x=8*9/12\\ \\x=6\ units`