Final answer:
The perimeter of a triangle with side lengths of 3.8, 1.7pg, and 5.9 is 9.7 + 1.7pg. The variable pg cannot be combined with the constant terms resulting in an expression for the perimeter.
Step-by-step explanation:
The perimeter of a triangle is the sum of the lengths of its sides. In this case, the triangle has side lengths of 3.8, 1.7pg, and 5.9. To find the perimeter, we simply add these values together:
Perimeter = 3.8 + 1.7pg + 5.9
To combine like terms, we add the numerical parts first:
3.8 + 5.9 = 9.7
Since pg is a variable or a unit that can't be combined with the constant terms, the final perimeter is equal to:
Perimeter = 9.7 + 1.7pg