660.011/1 would be equivalent to that expression
Answer:
The answer is 1.79 × 10-3
2x + y = 8
x - y = 10
--------------add
3x = 18
x = 6
x - y = 10
6 - y = 10
-y = 10 - 6
-y = 4
y = -4
solution is : (6,-4)
To solve this problem you need to know the law of cosines.