Hi! Could you provide the answer and explanation please I don't understand them?

8 0 / 4.5 points Convert x2+y2=36 from a rectangular to polar equation. Or= 6 Or= 36 Or= -36 X Or=-6 19 0 / 4.5 points Given u = and v = find 2u-3v. O X O O O 20 0 / 4.5 points Find the component form of v =2u - 2w, where u = 2i-j and w = i + 2j. O 2i - 6j X O O 2i + 6j O 21 5/5 points Find the angle between the following two vectors: and . Round your answer to the nearest degree. You do not need to include the degree symbol in your solution. 16 0/ 4.5 points X Find the component form of the following vector: 147.41 (-1, 4 ) (2, 2) O O X O