Three vertices of a rectangle have coordinates (3,4), (5,-4), and (-7,-7). what is the y coordinate of the fourth vertex?

10 points to brainliest!

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

You eat 8 strawberries and your friend eats 12 strawberries from a bowl. there are 20 strawberries left. which equation and solution give the original number of strawberries?

The first few steps in solving the quadratic equation 9x2 + 49x = 22 ? 5x by completing the square are shown. 9x2 + 49x = 22 ? 5x 9x2 + 54x = 22 9(x2 + 6x) = 22 which is the best step to do next to solve the equation by completing the square? 9(x2 + 6x + 3) = 25 9(x2 + 6x + 3) = 49 9(x2 + 6x + 9) = 31 9(x2 + 6x + 9) = 103