9514 1404 393
Answer:
7. 45
8. 8
Step-by-step explanation:
The incenter is equidistant from the sides of the triangle. Here, you're given two of the radius measures as expressions in x, and you're asked to find the third. They are all the same, so you can equate and evaluate the expressions.
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7. 5x = 3x +18
2x = 18 . . . . . . subtract 3x
x = 9
WR = 3x +18 = 3(9) +18 = 45
QW = 45
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8. 15x -37 = 7x -13
8x = 24 . . . . . . . . . . add 37-7x
x = 3
DW = 7x -13 = 7(3) -13 = 8
WE = 8
