La. razón entre las edades de msria y diana es 4:5 y la diferencia entre sus edades es 9 años¿ cuál es la edad de diana?​

D(5, 7). e(4,3), and f(8, 2) form the vertices of a triangle. what is mzdef? oa. 30° ob. 45° oc. 60° od 90°

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?

If f(x) = 3x-2 and g(x) =2x+1 find (f-g)(x)