State whether each pair of ratios are are equivalent. (yes or no)
a) 11 : 17 and 17 : 11
b) 15 : 35 and 25 : 45
c) 38 : 19 and 2 : 1

X+ y = 5 ; x - y =3 solve using linear combination

Examine this system of equations. what integer should the second equation be multiplied by so that when the two equations are added together, the x term is eliminated? 3/4x+1/7y=6 1/8x-3/5y=16

Out of five men and five women, we form a committee consisting of four different people. assuming that each committee of size four is equally likely, find the probabilities of the following events: 1. the committee consists of two men and two women 2. the committee has more women than men. 3. the committee has at least one man. for the remainder of the problem assume that alice and bob are among the ten people being considered. 4. both alice and bob are members of the committee.