Can sides of a triangle have lengths 3,4,9

Aline on the wall and a line on the floor are skew. always, sometimes, or never?

Amuffin recipe, which yields 12 muffins, calls for cup of milk for every 1 cups of flour. the same recipe calls for cup of coconut for every cup of chopped apple. to yield a batch of 30 muffins, how much flour will be needed in the mix?

What is the perimeter of trapezoid jklm? + units 2 + + units 9 + units 9 + + units