Let X = {x|x is a whole number less than 10} and Y = {−3, −2, 1, 3, 5, 7, 20}. Find X ∩ Y.

A. {−3, −2}
B. {−3, −2, 1, 3, 5, 7}
C. {−3, −2, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 20}
D. {1, 3, 5, 7}

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