In a school of 450 students

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out

Rhombus adef is inscribed into a triangle abc so that they share angle a and the vertex e lies on the side bc . what is the length of the side of the rhombus if ab=c, and ac=b.

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab