A worker is tiling the floor of a rectangular room that is 12 feet by 15 feet. The tiles are square with side lengths 1 & 1/
2 answers:
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The two angles pictured are corresponding angles, so they are congruent.
Therefore:
17x - 4 = 12 + 15x
Isolate for x by subtracting 15x from both sides:
2x - 4 = 12
Add 4 to both sides:
2x = 16
Divide both sides by 2:
x = 8.