Sistemas de dos ecuaciones lineales con dos inocognitas y el metodo de sustitucion
6x у 2​

Two streets intersect at a 30- degree angle. at the intersection, the are four crosswalks formed that are the same length. what type of quadrilateral is formed by the crosswalks?

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

The sum of the speeds of two trains is 720.2 mph. if the speed of the first train is 7.8 mph faster than the second train, find the speeds of each.