Answer:
The answer is D
Step-by-step explanation:
I wish i can explan but i got to go, piece
The key idea is that, if a vector field is conservative, then it has curl 0. Equivalently, if the curl is not 0, then the field is not conservative. But if we find that the curl is 0, that on its own doesn't mean the field is conservative.
1.

We want to find
such that
. This means



so
is conservative.
2.

Then




so
is conservative.
3.

so
is not conservative.
4.

Then




so
is conservative.
For A. the muddy water will slowly begin to decrease because it's been left out in the sun, some of the water will begin to evaporate.
(I don't know about B, or C, but I tried my best on A.)
Make sure to put in your own words. :)
Answer:
12g8h10
Multiply each variable quantity by 2 and combine.
X-3=66
x=69
69+41+(y-9)=180
110+y-9=180
101+y=180
y=79