Which expression has a positive value? A. (negative 5) (negative 9) B. 2 minus 4 C. 12 divided by (negative 4) D. Negative 3 + (negative 7)

[15 points, algebra 2]simplify the complex fraction and find the restrictions.

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

If the diagram polygon abcd is a reflection across ef to make polygon a'b'c'd'.