Use polar coordinates to find the limit. [if (r, ������) are polar coordinates of the point (x, y) with r ≥ 0, note that r → 0 as (x, y) → (0, 0). ] (if an answer does not exist, enter dne. ).

In factoring by grouping, what would you have for step 3 for the following? step 1: x^3 +5x^2 +4x+20 step 2: x^2 (x+5)+4(x+5) step 3: ?

Find the difference (8ab+a+2) - (3ab+6)

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%