In an equilateral triangle, what is the relationship between the length of a side and the perimeter? *

Rename mixed numbers before you can subtract are what

What number should be added to both sides of the equation to complete this square? x^2-10x=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 .