Answer:
perimeter is 7.5 units
Explanation:
the sides of the regular polygon are the same length , then
5x - 6 = 3)x - 1)
5x - 6 = 3x - 3 ( subtract 3x from both sides )
2x - 6 = - 3 ( add 6 to both sides )
2x = 3 ( divide both sides by 2 )
x = 3 ÷ 2 = 1.5
then length of one side is
5x - 6 = 5(1.5) - 6 = 7.5 - 6 = 1.5 units
then perimeter = 5 × 1.5 = 7.5 units