If a 21 foot ladder is placed against a vertical wall of a building, with the bottom of the ladder standing on level ground 11 feet from the base of the building, how high up the wall does the ladder reach?

Find the equation of the line that goes through the points (4, –1) and (2, –5). use slope formula,equation,to find the slope of a line that passes through the points. m = use slope-intercept form, y = mx + b, to find the y-intercept (b) of the line. b = write the equation in slope-intercept form, y = mx + b.

The equation respenting the left table is

The figure below shows rectangle abcd and the triangle eca on a coordinate plane.which of the following expressions represents the perimeter of triangle of triangle eca in units