Algebra
posted by Jessie .
if you are looking at the horizon, you can determine the distance you are form the horizone in miles. D, form a height, h, in feet by the equation of D = 1.2 square root H. if you are standing on a mountain top that is 12,000 feet in elevation, how far are you from the horizon

D = 1.2√H
Now just plug in H=12000