Respuesta :

Answer:

x = 6

Step-by-step explanation:

B is the midpoint of AC. So, the length of AB equals length of BC

BC = AB

4x - 4 = 20  {add 4 to both sides}

4x  -4 + 4 = 20 + 4

4x = 24  { divide both sides by 4}

4x /4 = 24/4

x = 6

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