Answer:A system of linear equations usually has a single solution, but sometimes it can have no solution (parallel lines) or infinite solutions (same line).
Step-by-step explanation:
Answer: 12+8.2n
Step-by-step explanation: Your basically adding 12 to 8.2 times n.
Answer:
B
Step-by-step explanation:
The ratio of water to mix is 1:4.
Answer:
70 degrees
Step-by-step explanation:
rectange angle total = 360
1 corner = 90
90-20 = 70