Find k so that the line through (3,4) and (k,6) is a) parallel to 5y-2x=9 b)perpendicular to 2y+3 x=7

Abird on top of a 200 ft bridge tower sees a man standing on the lower part of the bridge (which is 50 ft above the ground). the angle of depression from the bird is 26 ̊. how far is the man from the base of the bridge tower? with explanation and pictures .

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?

Find the volume of the solid whose base is the region bounded by f(x), g(x) and the x-axis on the interval [0, 1], and whose cross-sections perpendicular to the y-axis are squares. your work must show the integral, but you may use your calculator to evaluate it. give 3 decimal places for your answe