Let u=3i-j+k, v=j-3k, w= -9i+ 3j-3k. Which vectors, if any are (a) perpendicular? (b) Parallel? CRIN (a) Which vectors are perpendicular? Select the correct choice below and fill in the answer box(es) within your choice. OA. The vectors OB. Vector is perpendicular to vectors OC. None of the vectors are perpendicular are perpendicular. (Use a comma to separate answers as needed.) (Use a comma to separate answers as needed.)

If u = 2i-j- 3k , w = 3i – 9j+ 5k and v = perpendicular. 15i 3 -5k, then the vectors ----------are Select one: OA. u and v O B. u and w O C. v and ww O D. None of these answers

Which one of the following expressions is the value of the cosine of the acute angle between the vectors u = (1,2, 3) and v = (1, –2,3)? 3 (A) 7V2 2 (B) 7 (C) 7/2 3 (D)

Find the value of a so that vectors U = ai+ 6j and V= 6i+24j perpendicular. are a = -24 a = -25 O a = -27 a = -26 a = -20

For the pair of vectors U = , V = , find U + V, U - V, and 3U - 4V. U + V = 3U 4V = Need Help? Read It X xx

Four vectors are shown in the figure below. +y4 Ĉ Ď A +x a. Which of the resultant vectors listed below comes closest to lying along the x axis? OC+ B OÃ+ Ď OD+C b. Is the component of your answer in part a positive or negative? Positive Negative