Let u=(1, 2, 3, 4, 5, 6, 7, 8), a = {4, 2, 8), b {3, 4, 1, 2), and c=(5, 7, 1). find the following. (enter your answers as a comma-separated list. enter empty for the empty set.) an (bn c) { }

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

Afarmer sells 9.5 kilograms of apples and pears at the farmer's market. 4/5 of the weight is the apples and the rest is the pears. how many kilograms of pears did she sell at the farmers market

The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.