Is a 90° angle perpendicular ​

Write the equation for the parabola that has x− intercepts (−2,0) and (4,0) and y− intercept (0,4).

Which of the following circles have their centers on the x-axis? check all that apply.

Someone answer this asap for the length, in feet, of a rectangular rug is represented by the expression 5x² + 2x. the width, in feet, is represented by the expression 3x². which expression represents the perimeter, in feet, of the rug? a. 8x² + 2x b. 8x² + 4x c. 16x² + 2x d. 16x² + 4x