Sophie babysat for 3 7/12 hours on friday. she babysat for 2 5/6 hours on saturday. how long did sophia babysit on friday and saturday combined?

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.

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.