A table top would be a good representation of a plain because it is a flat surface, and isn't a 3D object, if that makes sense. A box wouldn't be a plane because it has 6 different sides but a table only has one side and one plane. hope this helps :)
Answer:
West
Step-by-step explanation:
Clock wise goes to the right, and There's 4 directions 90° Apart. So we basically cycle through the directions by 3
North -> east -> South -> West
Add the like terms.
12r+11r-4r= 19r
5s+9s=14s
-7t=-7t
19r+14s-7t
If it is the letter for it then figure the equation and then fill them in
So,
If we add them together, we get
5 + 3 + 4 + 1 = 13
Since there are 4 blue chips, the probability would be 4 out of the total number of chips, or 4/13.