3/8=? /24 what number goes in place of the question mark? need asap

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

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?

Aflower has 26 chromosomes. to create a new flower, how many chromosomes would a sperm cell have? what is this process called? part 2: within a flower cell that has 26 chromosomes, how many chromosomes would a cell that is created within the stem of a flower as it grows, have? what is this process called?