Question: URGENT!!! Please help me with these three questions. _ ..___ rr' 5- ___._____ 21. If 11' and 13 are collinear and the magnitude of if

URGENT!!! Please help me with these three questions.

URGENT!!! Please help me with these three questions. _ ..___ ""rr"""'""" 5-

_ ..___ ""rr"""'""" 5- ___._____ 21. If 11' and 13 are collinear and the magnitude of if is 7 times the magnitude of 13, write an expression that represents the sum of 11' and 1'5. [2 marks] 22. Determine the area of AABC with vertices A(2, 1, 4), 3(3, 1, 1), and C(1, 0, 2). [4 marks] 23. A ship is on a heading of 040 at 20 knots and a 2 knot current is flowing from 010. Determine the resultant velocity of the ship to 1 decimal place. [4 marks]

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