What is the sum or differece
-12 1/2 + 4 1/2

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

Which statement accurately explains whether a reflection over the x-axis and a 180° rotation would map figure acb onto itself?

Explain step-by-step how to simplify -5(2x – 3y + 6z – 10).