F=vu÷v+t, find v if f=20 and u=5

Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x