Order the steps that should be used to solve a system of equations using elimination.

1. Find an expression(s) that can be eliminated.

2. Add the equations together (plus and minus & minus and plus) such that they cancel each other out.

Step-by-step explanation:

E.g.

2x +5 = 15 1

3x + 5 = 20 2

We are gonna eliminate 5 since it occurs in both equations.

2-1: 3x-2x+5-5 = 20-15

(+5-5) = 0, we are left with the x.

x = 5.

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq

17 1/3

step-by-step explanation: