Find the supplement of this angle 7/9 right angle​

David is spreading mulch on a triangular area of his flower bed. the coordinates of the vertices of the area are (1, 3), (9, 3), and (4, 6). what is the area of the triangle if each square has an area of 3 square feet?

Find the area of a parallelogram with base 15 yards and height 21 2/3

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)