Marco's model bridge is 9 cm taller than shoes model bridge if sho's bridge is 31 cm tall which equation would be used to find the height of marco's bridge

David must install fencing around a lot that is shaped like a right angle.the side of lot that runs east-west is 200 ft long.the side of the lot runs north-south is 125 ft long.calculate how many feet of fencing he will need to surround the entire lot.

When the solutions to each of the two equations below are graphed in the xy-coordinate plane, the graphs of the solutions intersect at two places. write the y-cordninates of the points of intersection in the boxes below in order from smallest to largest. y=2x y=x^2-3

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cos of 61.6