Which statement is not sufficient to prove that triangle ABC is similar to triangle EDC

An air conditioning system can circulate 350 cubic feet of air per minute. how many cubic yards of air can it circulate per minute?

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.

In a sale there is 25% of all prices a chair costs £45 in sale how much was it before the sale