Answer:
Heating and cooling costs might vary considerably.
No solution
Step-by-step explanation:
-3x-9=-3x-3-5
-3x-9=-3x-8
-9=-8
translation then reflection
Perimeter = 140
Side 1 = x
Side 2 = 2x
Side 3 = 3x - 10
x + 2x + 3x - 10 = 140
6x - 10 = 140
6x = 150
x = 25
Side 1 = 25 cm
Side 2 = 50 cm
Side 3 = 65 cm
Hope this helps!! :)