Respuesta :

the answer is B. 6 , this matches  the ratio

Answer:

Option B. The length of DE is [tex]6\ units[/tex]

Step-by-step explanation:

we know that

The triangle XYZ and DEF are similar triangles

therefore

The ratio of their corresponding sides is equal

[tex]\frac{12}{8}=\frac{9}{x} \\ \\x=8*9/12\\ \\x=6\ units[/tex]