Asurvey is taken to figure out the average temperature across all cities in the united states on a particular day. in 10 randomly chosen states, 40 cities are chosen to record the temperature. which sampling method describes this situation?

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: