Two lines meet at a point that is also the vertex of an angle. Set up the equations to determine x and y.

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

Refer to interactive solution 17.45 to review a method by which this problem can be solved. the fundamental frequencies of two air columns are the same. column a is open at both ends, while column b is open at only one end. the length of column a is 0.504 m. what is the length of column b?

The measures of the legs of a right triangle are 15m and 20m . what is the length of the hypotenuse