Select two ratios that are equivalent to 27: 9.

Find cot x if sin x cot x csc x = √2

How can you find the mean absolute deviation (mad) for this set of data?

Let u = {q, r, s, t, u, v, w, x, y, z} a = {q, s, u, w, y} b = {q, s, y, z} c = {v, w, x, y, z}. list the elements in the set. a ∩ (b ∪ c)a) {q, s, w, y}b) {q, y, z}c) {q, s, u, w, y, z}d) {q, r, w, y, z}