Andy and elizabeth each rounded 2,639,456 to the nearest ten thousand. andy got 2,640,000.elizabeth got 2,630,00.who is correct

Consider the table below. x y -1 -5 0 5 1 11 2 13 3 11 complete the standard form equation representing the quadratic relationship displayed above, where a, b, and c are constants.

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

Find the quotient. 50a2 – 98b2 -5a +7b