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OpenStudy (anonymous):
Assume that u⋅v=6, ∥u∥=7, and ∥v∥=9. What is the value of 10u⋅(7u−7v)?
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OpenStudy (anonymous):
70 (u*u) - 70(u*v)
OpenStudy (anonymous):
(u*u) = ||u||^2
OpenStudy (anonymous):
70 (49) - 70(6)
OpenStudy (anonymous):
3430 - 420 = 3010
OpenStudy (anonymous):
awesome, I actually understand this one :)
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OpenStudy (anonymous):
thank you :)
OpenStudy (anonymous):
@JuanitaM ty
OpenStudy (anonymous):
uw
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