in order to slove the following system of equations by addition, which of the following could you do before adding the equations so that one variable will be eliminated when you add them? 4x-2y=7 3x-3y=15

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.

a 360 degree rotation

step-by-step explanation:

step-by-step explanation:

what are the statements? and what do you mean by "216 2 1 6"?

the answer is b.

step-by-step explanation: