21. If u and are collinear and the magnitude of u is 7 times the magnitude of v, write an expressionthat represents the sum of u and v.22. Determine the area of AABC with vertices A(2,− 1, 4), B(3, 1, − 1), and C(1, 0, 2).23. A ship is on a heading of 040° at 20 knots and a 2 knot current is flowing from 010°. Determine theresultant velocity of the ship to 1 decimal place. [

As per the Bartleby guidelines, answering only first question as the other questions are not the sub…

Answered: 21. If u and are collinear and the…

Elementary Geometry For College Students, 7e

7th Edition

ISBN:9781337614085

Author:Alexander, Daniel C.; Koeberlein, Geralyn M.

Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.

Chapter9: Surfaces And Solids

Section9.2: Pyramids, Area, And Volume

Problem 43E

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21. If u and are collinear and the magnitude of u is 7 times the magnitude of v, write an expression that represents the sum of u and v.