Answer:
![x=3](https://tex.z-dn.net/?f=x%3D3)
Step-by-step explanation:
By the exterior angle theorem,
![(45x)\degree=(57+x)\degree+(26x)\degree](https://tex.z-dn.net/?f=%2845x%29%5Cdegree%3D%2857%2Bx%29%5Cdegree%2B%2826x%29%5Cdegree)
Group like terms and solve for x.
![45x-26x-x=57](https://tex.z-dn.net/?f=45x-26x-x%3D57)
![19x=57](https://tex.z-dn.net/?f=19x%3D57)
Divide both sides by 19;
![x=3](https://tex.z-dn.net/?f=x%3D3)
Q(-3,-3)
R(3,2)
S(5,2)
T(5,-4)
I'm confused can you edit your question and then ask it again
Answer:
New area: 12ft^2
Step-by-step explanation:
1/3 of 9 is 3
1/3 of 12 is 4
Area = l x w
so 3 x 4 = 12