ah, those are systems you want one variable to cancel out. I would time the bottom equation by -1 so x cancels then u solve for y. then u plug all back in to solve for x.
Answer:
30m squared carpet is needed to cover the hallway and the living room.
Step-by-step explanation:
Living room area
6 × 4.2 = 25.2
Hallway area
3.2 × 1.5 = 4.8
Total area
25.2 + 4.8 = 30m squared
Answer:
Quotient = 3
Step-by-step explanation:
We need to solve the given expression :
It can be done as follows :
As, 
So,
Hence, the required quotient is 3.
Answer:
Step-by-step explanation:
25(w+10) + 13.5(w +10)
The answer is B. Since the graph increases by 4 on the y-axis as <em>x</em> increases by 1, the constant of proportionality is 4.
