Which products result in a perfect square trinomial? check all that apply. (x + 9)(x 9) (xy + x)(xy + x) (2x 3)(3 + 2x) (16 x2)(x2 16) (4y2 + 25)(25 + 4y2)

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.

Write the expression as a constant , a single trigonometric function, or a power of a trigonometric function. sin x cos x/ tan x

10 points? me . its important ‼️‼️