Ab is parallel to cd and ef is perpendicular to ab. the number of 90 degree angles formed by the intersections of ef and the two parallel lines ab and cd is

anyone? find the second, fifth, and ninth terms of a sequence where the first term is 65 and the common difference is -7. 72, 93, 121 72, 79, 86 58, 37, 9 58, 51, 44

If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (cxd)(x)

The distance between two cities is 368 miles. if the scale on the map is 1/4 inch=23 miles, what is the distance between the cities on the map?