The axis of symmetry of a parabola is x = 5, the y-coordinate of the focus is 4, and the directrix is at y = 8. What is the equation of the parabola?

Aright triangle has an area of 18 square inches. b: if the triangle is not an isosceles triangle, what are all the possible lengths of the legs, if the lengths are whole numbers. answer !

The difference between tax advoidance and tax evasion

There are 15 plates and each plate is either 7 or 12 inches diameter. which systems of equations do you use to find the number of 7 inch plates, x and 12 inch plates, y