I believe your answer is (3) -9.
You use the first equation listed since x<0
So 2(-5)+1=-10+1=-9.
Multiply 1st equation by 5
-5x + 10y = -20
now you have
-5x + 10y = -20
5x - 10y = 20
---------------------add
0 + 0 = 0
0 = 0
answer
C. the system has infinitely many solutions
Answer:
It's a right triangle :)
Step-by-step explanation:
Assuming the cube is closed, you can use the divergence theorem:
where is the surface of the cube and is the region bounded by .
We have
so the flux is 0.
Answer:
No
Step-by-step explanation:
If they were opposite, they would be equal.
But they are not, (on one of the spaces in between them is smaller and one is larger.)
Hope I have helped you, since it seems I haven't helped "other people" the last time :/