Mathematics, 20.10.2020 18:01, annaharmon283
A triangle has side lengths of (4.5x + 7.5y)cm, (8.4x +2.5z) cm, and (1.5z - 4.5y) cm. Which expression represents the perimeter, in centimeters, of the triangle?
1) 19.9xyz
2) 12xy + 10.9.xz - 3yz
3) 12.9x + 3y + 4z
4) 12.9x - 12y + 4z
Answers: 3
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A triangle has side lengths of (4.5x + 7.5y)cm, (8.4x +2.5z) cm, and (1.5z - 4.5y) cm. Which express...
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