A triangle has side lengths of (2.6w-4.2x)(2.6w−4.2x) centimeters, (1.3w+8.1y)(1.3w+8.1y) centimeters, and (3.6y+9.6x)(3.6y+9.6x) centimeters. Which expression represents the perimeter, in centimeters, of the triangle?

Which equation and solution can be used to solve this problem? thirteen less than a number is sixteen. 13-n=16: add 13 to both sides. the answer is 29. n+13=16: subtract 13 from both sides. the answer is 3. n+16=13 subtract 13 from both sides. the answer is 3. n-13=16: add 13 to both sides. the answer is 29.

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How do you convert 1.27 to a percentage