Respuesta :

Answer:

8

Step-by-step explanation:

In this case the side-splitter theorem states that :

[tex]\frac{x}{12} = \frac{6}{9} \\\\Then\\\\x = \frac{12*6}{9} = \frac{72}{9} =8[/tex]
8 because you gotta use the formal to slove the problem

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