Furniture Surface Area A table in an art room has the shape of a regular octagon. You and your friend want to find the area at the top of the table. Decompose the top of the table into eight matching triangles. What is the area at the top of the​ table?

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0

In an improper fraction, is the numerator equal to, less than, or greater than the denominator

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?