Answer:
Infinitely solution exists,
Required solution is, 
Step-by-step explanation:
We have the given equations:


Here, the augmented matrix is :
![\left[\begin{matrix}1&2&8&8\\1&1&4&4\end{matrix}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Bmatrix%7D1%262%268%268%5C%5C1%261%264%264%5Cend%7Bmatrix%7D%5Cright%5D)
Now, find the echelon form of the augmented matrix.
![=\left[\begin{matrix}1&2&8&8\\0&-1&-4&-4\end{matrix}\right]^{R_1\rightarrow R_2-R_1}](https://tex.z-dn.net/?f=%3D%5Cleft%5B%5Cbegin%7Bmatrix%7D1%262%268%268%5C%5C0%26-1%26-4%26-4%5Cend%7Bmatrix%7D%5Cright%5D%5E%7BR_1%5Crightarrow%20R_2-R_1%7D)
![=\left[\begin{matrix}1&0&0&0\\0&-1&-4&-4\end{matrix}\right]^{R_1\rightarrow R_1+2R_2}](https://tex.z-dn.net/?f=%3D%5Cleft%5B%5Cbegin%7Bmatrix%7D1%260%260%260%5C%5C0%26-1%26-4%26-4%5Cend%7Bmatrix%7D%5Cright%5D%5E%7BR_1%5Crightarrow%20R_1%2B2R_2%7D)
Therefore, 


Let
, then the required solution is

Answer:
N is an integer
Step-by-step explanation:
The gradient of the line is 2.5, the y-intercept is 5.
The equation representing the line is y = 2.5x + 5
Based on the concept mentioned in my previous answers to your questions, this means the shaded region is represented by y ≤ 2.5x + 5
The answer is D because 5:20 + 20 + 15 is 5:55
Answer:
x=3/4 ; y=5/3
Step-by-step explanation:
3x + 5x = 6
8x=6
x=6/8
x=3/4
4(3/4) + 3y = 8
3+3y=8
3y=5
y=5/3