Is the square root of negative 5 a rational irrational or imaginary

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%

If a || b and e || f , what if the value of y ?

How can you find the mean absolute deviation (mad) for this set of data?