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we proved in class that the distance from the focus to the center of an ellipse is square root of a squared minus b squared. if an dentists lamp has a reflector that takes its shape from an ellipse...

we proved in class that the distance from the focus to the center of an ellipse is the square root of a2-b2. if an dentist lamp has a reflector that takes its shape from...

Two people standing 10,000 feet apart see a lightning strike. One person is 5500 feet farther from the lightning strike than the other. The possible locations form a hyperbola with the two people...

Write its equation in standard form Sketch the graph   For Parabolas, identify the vertex, focus, directrix, and axis of symmetry. For Circles, Identify the center and radius. For...

Write its equation in standard form Sketch the graph For Parabolas, identify the vertex, focus, directrix, and axis of symmetry. For Circles, Identify the center and radius. For Ellipses,...

Write its equation in standard form Sketch the graph For Parabolas, identify the vertex, focus, directrix, and axis of symmetry. For Circles, Identify the center and radius. For Ellipses,...

Write its equation in standard form Sketch the graph For Parabolas, identify the vertex, focus, directrix, and axis of symmetry. For Circles, Identify the center and radius. For Ellipses,...