This is two or more equations with common variables, also known as a linear system.

The Black Death killed an estimated 30 to 60% of Europe's population. What was the Black Death?

Name the five factors that made Great Britain the starting place for the Industrial Revolution

About 9,000 years ago, some African hunter-gatherers begin to farm and raise herd animals, a practice called

What challenges and threats did prisoners and wounded soldiers both face during the Civil War?

What term is used to describe a region just beyond or at the edge of the settled area

Which of the following countries is least likely to be considered a developing country? A. a country with little industrialization B. a country with a single-product economy C. a country dominated by subsistence agriculture D.

Which of the following created separate facilities for black and white people in the south? 1. fourteenth amendment 2. civil rights acts 3. Jim crow laws 4. emancipation proclamation

What gives NATO faith that they are prepared for a possible confrontation?

Which was the most important result of the French Revolution

Why did farmers in the 1930's often fall on their tax payments? A They had very little money B They needed equipment and seed C They had to pay high taxes D They we're not required to pay taxes