The circumference of a circle is 17 π π in. Find its diameter, in inches

What is the frequency of the sinusoidal graph?

From the top of a tree a bird looks down on a field mouse at an angle of depression of 50°. if the field mouse is 40 meters from the base of the tree, find the vertical distance from the ground to the bird's eyes.

What is a correct first step in solving the inequality-4(3-5x)> -6x+9