You need to cut 7 planks of wood that are 2 2/5 feet long each, and 4 planks of wood that are 2 3/4 each. if these are cut from a 27 ft length of wood, how much wood will be left ?

Plzz ! if you were constructing a triangular frame, and you had wood in the length of 4 inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no? = explain your mathematical thinking/show your work: