Chemical equations must be balanced to satisfy
the law of definite proportions
the law of multiple proportions
the law of conservation of mass
avogadro's principle

Two parallel lines are crossed by a transversal.what is value of x

The function ƒ is defined by ƒ(x) = (x + 3)(x + 1). the graph of ƒ in the xy-plane is a parabola. which interval contains the x-coordinate of the vertex of the graph of ƒ?

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14