Perform the indicated operation 2 3/8 x 5 3/4

Find the value of x. round the length to the nearest tenth

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.

David leaves his house to go to school. he walks 200 meters west and 300 meters north. how far is david from his original starting point?