A= 43, a= 25, b= 28 law of cosines

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.

What is the equation of a vertical line passing through the point (−5, −1)? y = −5 y = −1 x = −5 x = −1

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2