Mathematics, 26.07.2019 16:30, 2020IRodriguez385
For vectors u=-6i +2k and v=7i-4j, find (-3u)*v. a) -450 b) -50 c) 108 d) 150 i know how to do these problems, but i am stuck on this question, because i keep finding the answer 118. i know you change -6i+2j to (-6,2) and 7i-4j to (7,-4) and then plug them into the equation but i don't know what i am doing wrong.
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For vectors u=-6i +2k and v=7i-4j, find (-3u)*v. a) -450 b) -50 c) 108 d) 150 i know how to do these...
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