Pls answer need this rn

The means and mean absolute deviations of the individual times of members on two 4x400-meter relay track teams are shown in the table below. means and mean absolute deviations of individual times of members of 4x400-meter relay track teams team a team b mean 59.32 s 59.1 s mean absolute deviation 1.5 s 245 what percent of team b's mean absolute deviation is the difference in the means? 9% 15% 25% 65%

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

If value of cos330° is √3/2 then find tan165°.