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Math

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PROBLEM

Given: YZ=11Y Z=11 and XZ=38X Z=38
Find the length of XY\overline{X Y}.
XY =
\square

STEP 1

1. Points X X , Y Y , and Z Z are collinear.
2. The line segment XZ XZ includes the segments XY XY and YZ YZ .
3. The distances are measured in the same units.

STEP 2

1. Understand the relationship between the segments.
2. Use the segment addition postulate.
3. Solve for the unknown segment length.

STEP 3

Understand the relationship between the segments. Since X X , Y Y , and Z Z are collinear and in that order, the length of XZ XZ is the sum of the lengths of XY XY and YZ YZ .

STEP 4

Use the segment addition postulate, which states:
XZ=XY+YZ XZ = XY + YZ

SOLUTION

Substitute the known values into the equation:
38=XY+11 38 = XY + 11 Solve for XY XY :
XY=3811 XY = 38 - 11 XY=27 XY = 27 The length of XY \overline{XY} is:
27 \boxed{27}

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