6.the base of a triangle is 21 inches and the height is 12 inches. which of these expressions correctly shows how to calculate the area of a triangle?

Quadrilateral wxyz is on a coordinate plane. segment yz is on the line x+y=7 and segment xw is on the line x+y=3. which statement proves how segments yz and xw are related

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.

Yvaries inversely as x. y =12 when x=5. find y when x=4