Which equation and variable would be easiest to solve for in order to solve the system by substitution?

3x+2y=16
7x+y=19

You are assembling pieces of an iron gate to complete a fence. the finished gate will look like the one below. in order to assemble the gate it is important to under how the pieces are related. part 1: how are pies 1 and 2 in the archway related? part 2: how are the rectangular sections 5 and 6 in the center of the gate related to each other?

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.

At oaknoll school, 90 out of 270 students on computers. what percent of students at oak knoll school do not own computers? round the nearest tenth of a percent.