X, Y and Z are three angles lying on a straight line. If x = y = z ,then find the value of y. ( please i will be needing it immediately )

Which of these equations, when solved, gives a different value of x than the other three? a9.1 = -0.2x + 10 b10 = 9.1 + 0.2x c10 – 0.2x = 9.1 d9.1 – 10 = 0.2x

How can you construct perpendicular lines and prove theorems about perpendicular lines

Find the volume of the solid bounded by the plane z=0 and the paraboloid z=1-x^2 –y^2