Final answer:
To solve for YZ, set the given equations for RY, YZ, and RZ equal to each other and solve for x. Substituting the value of x into the equation for YZ gives the value of YZ.
Step-by-step explanation:
To solve for YZ, we need to find the value of x first. We can do this by setting the given equations for RY, YZ, and RZ equal to each other and solving for x:
RY = 2x + 9 = 4x + 1 = RZ
Simplifying these equations gives us:
2x + 9 = 4x + 1
Subtracting 2x from both sides:
9 = 2x + 1
Subtracting 1 from both sides:
8 = 2x
Dividing by 2:
x = 4
Now that we know x is 4, we can substitute it into the equation for YZ:
YZ = 4x + 1 = 4(4) + 1 = 17
Therefore, YZ = 17.