What is the Perimeter of the following

Plz answer asap

Two lines parallel to a third line are parallel to each other. always sometimes or never

George has seven boxes of five pencils. giulio three boxes of eight pencils. one of the boys arranges all his pencils equally into two groups. was this george or giulio how many are in each group explain

Which value of m will create a system of parallel lines with no solution? y= mx - 6 8x - 4y = 12