Derive the equation of the parabola with a focus at (? 5, ? 5) and a directrix of y = 7. f(x) = ? one twenty fourth(x ? 1)2 ? 5 f(x) = one twenty fourth(x ? 1)2 ? 5 f(x) = ? one twenty fourth(x + 5)2 + 1 f(x) = one twenty fourth(x + 5)2 + 1

Answer this two poles, ab and ed, are fixed to the ground with the of ropes ac and ec, as shown: two right triangles abc and edc have a common vertex c. angle abc and edc are right angles. ab is labeled 13 feet, ac is labeled 15 feet, ec is labeled 10 feet, and ed is labeled 4 feet.what is the approximate distance, in feet, between the two poles? 11.14 feet16.65 feet14.35 feet15.59 feet