Maggie's brother is four years younger than twice her age the sum of their ages 11 how old is maggie?

Find the solution of system of equation y= x-4 y=4x+2

Solve each quadratic equation by factoring and using the zero product property. 10x + 6 = -2x^2 -2

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches.approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *