The area of a rectangle is 108m^2 and its diagonal is 15m. find the perimeter of the rectangle. without quadratics.

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists

Seymour is twice as old as cassandra. if 16 is added to cassandra’s age and 16 is subtracted from seymour’s age, their ages become equal. what are their present ages? show !