What is the product of 3\sqrt{7} ​ and 7\sqrt{14} ​ in simplest radical form?

With math question will mark brainliest question in the pic.

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%

What is the unit rate of, 75% high fiber chimp food to 25% high protein chimp food.