Aboardis 84 inch long it will be cut into 15 equal pieces what will be the length

Use the elimination method to find the solution to the system of equations. 2x - 3y = -9 -x + 3y = 6

The deck that kenneth is building is in the shape of a parallelogram abcd the measure of angle c is one third the measure of angle b find the measure of each angle of the deck

What is the difference between regular convex and concave polygons