How do I solve this and what’s the answer? This is due at 11:59 pm on 2/9/21 PLEASE HELP!

What is the missing reason in step 5? linear pair postulategivendefinition of complementary anglescongruent complements theorem

You are updating your garage and the only thing left to paint is your garage day. you're only going to paint the slide that faces the street. the garage door is 9 fert 8inches tall and 120 inches wide. you need to know the surface area of the side of the garage door to determine how much paint to buy. the hardware store sells paint by how much covers a square foot. what is the surface area you should report to the hardware store what is the answer

What is the perimeter of an isosceles triangle with each leg measuring 2x+3 and the base measuring 6x-2?