Bo's sister Anna is 3/4 his age minus 1 year(s). She is 11 years old.

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

Jude is making cement for a driveway. the instructions show the amount of each ingredient to make 1 batch of cement. complete each statement to adjust the ingredients for each new situation if jude uses these instructions.

Which of the following circles have their centers in the third quadrant?