System of equation
x+y=2
-3+4y=15

This chart shows the number of soldiers killed according to two different sources. source a is a book written by university professors. source b is from a well-known historical website. in a paragraph, explain why the data presented is different, and evaluate the reliability of each source. which should be used in a school research project, and why?

How did the growth of railroads american businesses expand

Did egypt invent wheels or sailboats