Solve the following system via substitution.
m = 2n + 30
2m - n = 39

Simplify the expression and find the missing terms. the simplest form of has in the numerator and in the denominator.

Segment xy is dilated through point m with a scale factor of 2. which segment shows the correct result of the dilation

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 .