In one school year, the students spent a total of 840 hours in their classes. If they have EIGHT different classes, how many hours will they spend in THREE of those classes?

The rectangle shown has a perimeter of 108 cm and the given area. its length is 6 more than five times its width. write and solve a system of equations to find the dimensions of the rectangle.

The amount of data left on the cell phone six gb for 81.5 gb of data is used how much data is available at the beginning of the cycle

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}