Respuesta :

When two or more points are on a straight path, then they are collinear. So that in the given question, the value of x is 7.

Two or more points are said to be collinear if and only if they fall on a straight line. Thus, the points can be joined by a single straight line.

From the given question, it can be observed that;

XZ = XY + YZ

But given the following:

XY = 5x, YZ = 2x + 7, and XZ = 56

Then,

56 = 5x + (2x + 7)

     = 5x + 2x + 7

56 = 7x + 7

collect like terms to have

56 - 7 = 7x

49 = 7x

x = [tex]\frac{49}{7}[/tex]

  = 7

x = 7

Therefore, the value of x is 7.

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