Respuesta :

CoastsideDad

Answer:

AB = 16

AC = 20

Scale Factor : k = 4

Step-by-step explanation:

[tex]\frac{DF}{BC}[/tex] = [tex]\frac{12}{3}[/tex] = 4

[tex]\frac{AB}{4}[/tex] = [tex]\frac{12}{3}[/tex]

(4)(12)=  (3)((AB)

48 = 3AB

16  = AB

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