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Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

Note that B - A is just equal to B + (-A). A. Since the 2 vectors are in two opposite directions, we write: 4 u + (-6 u) = - 2 u. B. This one is quite tricky. Since I am not that expert in using the tip-to-tail method, I will use the component method. We first solve the components of the vectors: B: (x: 5 m) and (y: 0 m) and for -A: (*note: since we have an opposite direction, the vector will now have an angle of 60° + 180° = 240° and the new direction would be S of W) (x: 7.0cos240°) and (y: 7.0cos240°). Then subtract the components to get the components of the resultant vector: (x: 5m - 7.0cos240° = 8.5 m) and (y: 0 - 7.0sin240° = 6.06 m). Then we now solve the resultant by: R = sqrt ((8.5)^2 + (6.06)^2) = 10.45 m. For the angle, we solve: theta = arctan (6.06m / 8.5m) = 35.44°. So the final answer is: 10.45, 35.44° N of E.