Can someone please help me understand how to do this???

Alex drew a circle with right triangle prq inscribed in it, as shown below: the figure shows a circle with points p, q, and r on it forming an inscribed triangle. side pq is a chord through the center and angle r is a right angle. arc qr measures 80 degrees.

The variable in a relation who’s value depends on the value of the independent variable is called what?

An ulcer medication has 300 milligrams in 2 tablets. how many milligrams are in 3 tablets?