From what you’re given, you know that , for some constant a. From that, you know that –2 + a = –b, and that –2a = b.
Multiply that second equation by –1, and then you can do some solvin’.
–2 + a = –<span>b
</span>2a = –b
–2 + a = 2<span>a
</span>–2 = a
Answer:

Step-by-step explanation:
Remember that


The speed is equal to divide the distance by the time
Convert the units


so


Ammoni - NH3
nitrification - conversion of ammonia to nitrates
Eutrophication - nutrient overload in the environment
Nitrogen gas - nitrogen fixers
Lightning and bacteria - unusable by most organisms
I hope this helps you, It was the best I could do!
Since you want 4 right angles, and 2 pairs of opposite sides, you're probably looking for a rectangle.
Answer:
-22
Step-by-step explanation:
1) Substitute x and y into the equation:
-3(4) + 2(-5)
2) Simplify:
-12 + (-10)
= -22