The ratio of boys to girls is 5 to 4. there are 80 boys. how many girls are there? 4 16 64 100

Factor the polynomial 8y^2 - 72 btw "^" means exponent

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?

Tamar is measuring the sides and angles of tuv to determine whether it is congruent to the triangle below. which pair of measurements would eliminate the possibility that the triangles are congruent