Choose the appropriate description for the equation. Given: x^2 + y^2 = -4

A) Circle
B) No circle
C) Point-Circle

What is the difference between regular convex and concave polygons

One side of a rectangle is 7 feet shorter than seven times the other side. find the length of the shorter side if we also know that the perimeter of the rectangle is 306 feet.

What number should be added to the expression x^2+3x+ in order to create a perfect square trinomial? 3/2 3 9/4 9