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OpenStudy (anonymous):
The perimeter of the triangle is 12x + 8. Find the missing side in polynomial form. A. 10x - 1 B. 21x - 2 C. 2x + 9
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OpenStudy (anonymous):
OpenStudy (anonymous):
12x + 8 = 7x - 2 + 3x + 1 + y y = 2x + 9 C
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