Find the center and radius of this circle x^2+y^2-6x-10y+30=0

When you are making a circle graph by hand, how do you convert a number for a part into its corresponding angle measure in the circle graph? when you are making a circle graph by hand, what should you do if one of your angle measures is greater than 180°?

Find the solution on the interval [0, 2pi)

The graph shows how many words per minute two students read. drag to the table the unit rate that matches each graph.