Answer:
Perimeter of given triangle is ( 9.8x + 1.1y + 9.9z ) centimeters.
Step-by-step explanation:
Given : A triangle has a side lengths of (5.5x + 6.2y) centimeters, (4.3x+8.3z) centimeters and (1.6z -5.1y) centimeters
We have to find the expression that represents the perimeter (in centimeters)
of the triangle.
Perimeter of a figure is defined as the sum of all the sides.
Since given figure is triangle so perimeter of triangle is the sum of all the sides.
Given side lengths are
(5.5x + 6.2y) , (4.3x + 8.3z) and (1.6z -5.1y)
Thus, perimeter = (5.5x + 6.2y) + (4.3x + 8.3z) + (1.6z - 5.1y)
Perimeter = 5.5x + 6.2y + 4.3x + 8.3z + 1.6z - 5.1y
LIKE TERMS are term with same variables.
Rearrange, we get
Perimeter = 5.5x + 4.3x + 6.2y - 5.1y + 8.3z + 1.6z
Adding like terms, we get,
Perimeter = (5.5 + 4.3)x + (6.2 - 5.1)y + (8.3 + 1.6)z
Perimeter = (9.8)x + (1.1)y + (9.9)z
Thus, Perimeter of given triangle is 9.8x + 1.1y + 9.9z centimeters.
