Answer:
The given system of linear equations has infinite many solutions.
Step-by-step explanation:
Given equations are
σ-2ζ=3 eqn 1
4σ-8ζ=12 eqn 2
We will use elimination method to solve the linear system
Multiplying equation 1 by 4
4(σ-2ζ) = 4(3)
4σ-8ζ=12
We can see that the both equations in the system are same i.e. we get the same equations by simplifying the equations. The graph of both equations will overlap completely.
This means that the system has infinite many solutions.
Hence,
The given system of linear equations has infinite many solutions.
56z^2+2=22z
Answer:
12 CDs and 15 DVDs
Step-by-step explanation:
Let
x----> the number of CDs
y---> the number of DVDs
we know that
x+y=27 -----> x=27-y ----> equation A
15x+19y=465 ----> equation B
Solve by substitution
substitute equation A in equation B and solve for y
15(27-y)+19y=465
405-15y+19y=465
4y=465-405
4y=60
y=15 DVDs
Find the value of x
x=27-y
x=27-15=12 CDs
Answer:
The top line has a slope of 1/2
The bottom line has a slope of - 1/4