Alejandro weighs 37 pounds and sits on a seasaw 2 feet away from its center. if his brother marco sits on the seasaw 3 feet away from the center and the seasaw is balanced, how many pounds does marco weigh? if necessary, round your answer to the nearest tenth of a pound.
a. set up a proportion.
b. solve, showing your work, and write your answer in a complete sentence to answer the question being asked (rounding appropriately).

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.