Answer:
x = 5
Step-by-step explanation:
XY=4x,
YZ=x,
and
XZ=25
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Line XYZ
XY = 4x
YZ = x
XY + YZ = the total length of XZ, or XY + YZ = XZ
XY + YZ = 4x + x or 5x [Substituting the values for the line segments]
XZ = 5x
and since we know that XZ = 25
We can say 5x = 25, and, therefore, x = 5
