A: a circle has a circumference of 45 cm. what is the best estimate of the circle’s diameter?

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

Which of the following answers is 7/9 simplified? 7/9 2/9 11/9 2/7

Polygon hh is a scaled copy of polygon gg using a scale factor of 1/4. polygon h's area is what fraction of polygon g's area?