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Ch12_Review_Answers - -2o(17/3,19/3 156 ‘ Test page 31-1...

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Unformatted text preview: -2o. (17/3,19/3) 156 ‘ Test, page 31-1 1; {/fi ' 2. No 3. (,—.9, 9) 4' \/‘ 5. 4v has twice the magnitude and the opposite directiofi. of —2v. 7 . 65 (b).-' 3 7 Si—+2j 3 _31+"fiv§j ' 9. x=—~l ,=y _4 IQ..1.x—‘-'7,y=—4I 11.13111121- 12. 9j+6j ‘ 113. —12i—3j - ' 14.".‘3—31—21' .15. -(2+3:)1+(3 +1); ' ' 16. x=3,y =1 17 (7/2, 7/2) 13. (~l, 2) 19.-(A11swers may yary) (2, 51), (3, 2);r = (21' ~— j) + t(i'+ 31') . CHapter12.-I’Il'1ast . 1) ...
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