Find the value of the expression (3x – 12) +1/2 (xy – 10) for x = 4 and y = 6.

Find the slope of the line passing through a pair of points

72 the length of a side of a triangle is 36. a line parallel to that side divides the triangle into two parts of equal area. find the length of the segment determined by the points of intersection between the line and the other two sides of the triangle.

Aramp rises 4 feet over a distance of 10 feet. what is the length of the ramp?