10 points! express the complex number in trigonometric form. -4 a) 4(cos 270° + i sin 270°) b) 4(cos 90° + i sin 90°) c) 4(cos 0° + i sin 0°) d) 4(cos 180° + i sin 180°)

Adam drew two same size rectangles and divided them into the same number of equal parts. he shaded 1/3 of one rectangle and 1/4 of the other rectangle. what is the least number of parts into which both rectangles could be divided into?

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.

Need asap. solve for the following inequality