snt44460
snt44460
30-03-2018
Mathematics
contestada
find the dot product of v=-7i+4j and w=-6+5j
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sqdancefan
sqdancefan
30-03-2018
v•w = (-7i +4j)•(-6i +5j) = (-7)×(-6) +4×5 = 42 +20
v•w = 62
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