Write an expression for the area of square 4 by combining the areas of the four triangles and the two squares. Write an expression for the area of square 5 by combining the areas of the four triangles and the one square.

80 points to whoever answers correctly. Please don't say "I don't know, sorry," or something along those lines.

A+b+c+90=360

Step-by-step explanation:

A+B+C+90=360

Step-by-step explanation:

2.83941151 would be the answer you're looking for! : )

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18