What is the vertex of y=x^2-2x-1?

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180

Amodel rocket is launched from a roof into a large field. the path of the rocket can be modeled by the equation y = -0.04x^2 + 8.6x + 4.8, where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters, of the rocket above the ground. how far horizontally from its starting point will the rocket land? a. 0.56 m b. 215.56 m c. 431.11 m d. 215.74 m