I have tutor at 9pm plz help what is the cost of painting a wall 30m x 2m, when the painting costs £15 a litre covers 12m^2

What are the soultion(s) to the quadratic equation 40- x^2=0

If you were constructing a triangular frame, and you had wood in the length of 4 inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood?

The range of the following relation r {(3, -5), (1, 2), (-1, -4), (-1, 2)} is (1 point){-4, -5, 2, 2){-1, 1, 3){-1,-1,1,3){-5, -4,2)