If u and v are the vectors below, find m, so that u and v are perpendicular. u=(3, m); v=(-1, 4) Instructions for the answer: Type only answer. No Decimals. For example, 12L Given the following points: A (4, -2, 0) and B (-2, -4, 2), find: 1. The length of the segment AB Instructions for the answer: Round answer to one decimal place, and do not type the unit, Type only answer. For example, 12.5 2. The midpoint of the segment AB Instructions for the answer: Type only the coordinates of the midpoint and separate them by a comma. No decimals. No Brackets. For example, -1, 2, 4 A/