I do not understand how my answer is wrong please help will givebr />

16

Step-by-step explanation:

angle 6 and angle 3 are supplementary angles

that means added together, they equal 180

so 8x-13 + 4x+1=180

12x-12=180   simplify by adding and subtracting

12x=192    simplify by adding 12

x=16 divide 192 by 12

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2

oof cheaters cheat because they’re lazy that’s why i cheat xd

: )

step-by-step explanation: