Hello! , To those user well If answered, not joker, please answer it correctly I need a sober answer.​

The tiles below are pieces of a normal ecg tracing representing a little less than two heartbeats at a resting rate of 80 bpm. arrange the tiles in their correct order. rank from first to last. do not overlap any tiles.

Find the roots of the equation below. x^2 - 6 + 9 = 0

Ineed with this problem 21 show steps