Question

A triangle has side lengths of (4.7a-6.2b) centimeters, (6.3a+5.1c) centimeters, and (1.6c-4.9b) centimeters. Write an expression (in the simplest form) to represent the perimeter of the triangle.

Answer 1

Answer:

  11a - 11.1b + 6.7c

Step-by-step explanation:

The perimeter is the sum of the lengths of the sides:

  (4.7a-6.2b) +(6.3a+5.1c) +(1.6c-4.9b)

  = a(4.7 +6.3) +b(-6.2 -4.9) +c(5.1 +1.6)

  = 11a - 11.1b + 6.7c