Determine whether the following sides lengths could forma triangle. Prove your answer with an inequality: 5 ft, 2 ft, 10 ft

Yes or no?

Three numbers x, y, and z are in the ratio 2: 7: 8. if 12 is subtracted from y, then three numbers form a geometric sequence (in the order x, y–12, z). find x, y, and z. there are 2 sets.