Help me with my math! In indirect variation if y = 5 and x = 10, what is the value of k (the constant)?

What is not true about kl and mn? what is mn? (show )

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.

Tom travels between the two mile markers shown and then finds his average speed in miles per hour. select the three equations that represent this situation.