PLEASE HELP FAST!! 4. Find the unknown side of the triangle below (round to the nearest tenth). Show your work. Х 15 cm 14 cm

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 slope of the line below . enter your answer as a fraction or decimal. use a slash mark ( / ) as the fraction bar if necessary

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°