A system of equations is shown. 3x+y=20

2x−2y=8

What is the value of x+y for the system of equations?

Bob is putting books on a shelf and takes a break after filling 18 1/2 inches on the book shelf. the book shelf is now 2/3 full. how long is the entire bookshelf?

Which inequalities can be used to find the solution set of the following inequality? check all that apply. |2x – 5| (2x – 5) (2x + 5) –(2x – 5) –(2x + 5)

Ab and bc are tangent to circle d. find x is ab = 3x + 8 and bc = 26. find x