5-9 please asap ! Thank you

(Mx, My, Xm). 5. The moment about the x-axis is represented by: It is calculated by using the: . (x-coordinates, y-coordinates, origin) 6. When setting up a hydrostatic force integral, what do the bounds of integration represent? a. The water level c. The height of the plate b. The width of the plate d. The height of the fluid acting on the plate 7. Determine if any of the following functions is a solution to the differential equation xy' + y = 4x a. y = 4x by = 2x - 9x-1 c. y = 9x-1 - 2x d. y = 4x - 9x-1 e. none 8. An initial value problem has: (exactly 1 solution, infinite solutions, no solution) 9. A separable equation is one that can be written as: a. ax dy = f(x)g(y) dy = f(xy) b. ax C. dy = f (x)g(x) dx