The following dot plots shows the number of hours of sleep employees got before a major sale at three stores each dot represents a different employee

In the image, point a marks the center of the circle. which two lengths must form a ratio of 1 : 2? (options are in the images since thought they were harmful phrases)

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.