Lines e and f are parallel. The mAngle9 = 80° and mAngle5 = 55°. Which angle measures are correct? Select three options.

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 coordinates of point x that lies along the directed line segment from y(-8, 8) to t(-15, -13) and partitions the segment in the ratio of 5: 2.

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.