(a) find an example of sets a and b such that an b = {1,2} and aub = {1,2,3,4,5).
(b) find an example of sets a and b such that a ç b and a e b.

How do i do this activity, is appreciated

Louise measured the perimeter of her rectangular scrapbook to be 154 cm. if the scrapbook is 45 cm wide, how long is the scrapbook?

The diagonals of a quadrilaretral intersect at (-1,4). one of the sides of the quadrilateral is bounded by (2,7) and (-3,5) determine the coordinates of the other side in order for the quadrilaretral to be a square.