9. Ã= -2ê + -3ý and B = -4â + -4ŷ. Calculate R = Ã+ B. Calculate R, the magnitude of R. A. 7.7 B. 8.2 C. 8.7 D. 9.2
9. Ã= -2ê + -3ý and B = -4â + -4ŷ. Calculate R = Ã+ B. Calculate R, the magnitude of R. A. 7.7 B. 8.2 C. 8.7 D. 9.2
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