Use addition to solve the linear system of equations. x-y=4 x+2y=4

Elijah and his sister went to the movies. they had $34 altogether and spent $9.50 per ticket. elijah and his sister bought the same snacks. write and solve an inequality fotlr the amount that each person spent on snacks. interpret the solition

Ammonia molecules have three hydrogen atoms and one nitrogen atom.how many of each atom arein five molecules of ammonia

Which of the following represents the factorization of the trinomial below? x^2+7x-30