Explain in detail how to solve the system of equations using Substitution. What is the soltion? How can you verify your solution? (Use complete sentences.) x + y = 12
X = Y -2
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x=5, y=7

Step-by-step explanation:

Substitute (y-2) for x in the first equation because x=y-2.

(y-2) + y = 12

2y - 2 = 12

2y = 14

y = 7

Now substitute 7 for y in any of the equations.

x=7-2

x=5

To check your work, plug 5 for x and 7 for y into both equations.

5 + 7 = 12

^That is true.

5 = 7-2

^This is also true.

goog may be able to you find that answer

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.