Aright rectangular prism has a length of 4 inches, a width of 5 inches, and a height of 6 inches. if a plane slices the prism in half, parallel to its smallest face, which of the following describes the shape of the two-dimensional cross-section?

Write a numerical expression that satisfies all of the following conditions. 1.)the only number used in the expression is 5 2.)at least one exponent other than 1 is used 3.)when the expression is evaluated, the answer is greater than 40 and less than 50

Me with this one question, and i'll upvote the brainliest answer

Parabolas y=−2x^2 and y=2x^2+k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.