What is the first error Chaim made in his proof?

When the solutions to each of the two equations below are graphed in the xy-coordinate plane, the graphs of the solutions intersect at two places. write the y-cordninates of the points of intersection in the boxes below in order from smallest to largest. y=2x y=x^2-3

What describes horizontal cross section of the right rectangle 6m 8m 5m

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8