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OpenStudy (anonymous):
Find the indicated quantity, assuming u = 7i + j, v = i − 3j, and w = 3i + 5j. u · (v + w)
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OpenStudy (lalaly):
\[v+w=4i+2j\]\[u.(v+w)=28+2=30\]
OpenStudy (anonymous):
thank you! :)
OpenStudy (lalaly):
:D
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