Which of the following is equal to 11-2?

112

121

-121

1/112

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

James is playing his favorite game at the arcade. after playing the game 3 times, he has 8 tokens remaining. he initially had 20 tokens, and the game costs the same number of tokens each time. the number tt of tokens james has is a function of gg, the number of games he plays

Asphere has a diameter of 10 in. what is the volume of the sphere?