Answer: VX = 20
Step-by-step explanation: Using the Segment Addition Postulate, we know that VW + WX = VX. From there we create an equation 3x + 5 = 4x. From there, subtract 3x from both sides to get x by itself. This gives us the equation 5 = x, or just x = 5. Now that we know that x = 5, plug it into the equation for VX. This gives us VX = 4(5). Multiply. This tells us that VX =20.
3x + 5 = 4x
-3x -3x
5 = x / x = 5
VX = 4x
VX = 4(5)
VX = 20
