Answer:
147
Step-by-step explanation:
180-33=147
Answer:
![A(x,y),B(x+10,y),C(x+10,y-10) \:and\: D(x,y-10)](https://tex.z-dn.net/?f=A%28x%2Cy%29%2CB%28x%2B10%2Cy%29%2CC%28x%2B10%2Cy-10%29%20%5C%3Aand%5C%3A%20D%28x%2Cy-10%29)
Step-by-step explanation:
If a Rectangle has a perimeter of 40 units, then we can write that formula and find the a formula for the coordinates:
![\left\{\begin{matrix}w+l=20 & \\ w*l=100 & \end{matrix}\right.\Rightarrow w=20-l\Rightarrow (20-l)l=100\Rightarrow -l^2+20l-100=0\Rightarrow l^2-20l+100\Rightarrow (l-10)(l-10)\Rightarrow l=10\therefore l=10\: and\: w=10](https://tex.z-dn.net/?f=%5Cleft%5C%7B%5Cbegin%7Bmatrix%7Dw%2Bl%3D20%20%26%20%5C%5C%20w%2Al%3D100%20%26%20%5Cend%7Bmatrix%7D%5Cright.%5CRightarrow%20w%3D20-l%5CRightarrow%20%2820-l%29l%3D100%5CRightarrow%20-l%5E2%2B20l-100%3D0%5CRightarrow%20l%5E2-20l%2B100%5CRightarrow%20%28l-10%29%28l-10%29%5CRightarrow%20l%3D10%5Ctherefore%20l%3D10%5C%3A%20and%5C%3A%20w%3D10)
Therefore we can say:
![A(x,y),B(x+10,y),C(x+10,y-10) \:and\: D(x,y-10)](https://tex.z-dn.net/?f=A%28x%2Cy%29%2CB%28x%2B10%2Cy%29%2CC%28x%2B10%2Cy-10%29%20%5C%3Aand%5C%3A%20D%28x%2Cy-10%29)
Technically when
in this rectangle is a square, a degenerate square.
The domain is y >=0. Domain is the possible x values