Answer:
3x+y=45......equation 1
x-y=20......equation 2
Explanation:
There are now two equations, solve them using elimination or substitution method
I'm not 100% sure this is correct but this is the way I had learned.
Answer: The result of the efforts by the United States and Canadian governments to improve water quality was the GLWQA.
Explanation:
The GLWQA, is also known as the Great Lakes Water Quality Agreement. This agreement was put into place to implement actions and binational priorities that will improve the water quality of the Great Lakes. They help to restore the Great Lakes and protect the waters shared by the United States and Canada.
Answer:These are the highest mountains in the world. They provided a nearly impassable border for Ancient China, keeping the area isolated from many other civilizations. They were also important to Chinese religion and were considered sacred.
Explanation:
A. The epicenter.
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