Help would be appreciated! Point O is the Center of the regular nonagon shown at the right. Find the angle of rotation about O that maps F to H. A __ rotation about O maps F to H.

In the equations, a and b represent the price per night for a room in hotel a and hotel b, respectively, w weeks after september 1 last autumn. what was the price per night in hotel a when it was equal to the price per night in hotel b? a = 240 − 20w b = 320 − 30w

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 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°?