Step-by-step explanation:
x+2y = 10 ...1
-x+y = 2 ...2
...1 + ...2
x+2y+(-x+y) = 10 + 2
3y = 12
y = 12/3
= 4
Replace y = 4 in ...1
x + 2(4) = 10
x + 8 = 10
x = 10 - 8
= 2
(x,y) = (2,4)
Solution:
As always, try to find a way of looking at the problem that makes the solution simple. In this problem, regardless of the current state of the puzzle, a move consists of combining two clusters into a single cluster. Therefore every move reduces the number of clusters by 1. Since we begin with 2000 clusters (the single pieces) and end with 1 cluster, we need
\[2000-1=\boxed{1999}\]
moves to complete the puzzle.
Answer:
If they are reflection. I think they are congruent
Step-by-step explanation:
Answer:
y=-1/2x-2
Step-by-step explanation:
what is your question then?
