2,825 i am almost sure this is the right answer i apologize if not
A)
The question tells us that
y + z = 180
And
y=3x+20
z=x
So we put them in the first formula:
y + z = 180
(3x + 20) + x = 180
Add and get x to one side:
4x + 20 = 180
4x + 20 - 20 = 180-20
4x = 160
Divide both sides by 4
x = 40
B)
Put x back in to equation to get size of each angle:
Y =3x +20
Y=3(40)+20
Y=120+20
Y=140
Z=x
Z=40
Verify: y+z=180
140+40=180
180=180
34! Find the area of each of the six sides and then add them up:)
Answer:
x greater than or equal to 12cm^2
Step-by-step explanation:
25.2 / 7.8 = ~ 3.23 hope that helps
