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Mathematics 19 Online
OpenStudy (anonymous):

Assume that u⋅v=6, ∥u∥=7, and ∥v∥=9. What is the value of 10u⋅(7u−7v)?

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 :)

OpenStudy (anonymous):

thank you :)

OpenStudy (anonymous):

@JuanitaM ty

OpenStudy (anonymous):

uw

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