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Mathematics 9 Online
OpenStudy (anonymous):

Find the indicated dot product. r = <9, -7, -8>, v = <3, 4, 7>, w = <6, -9, 7> v - w

ganeshie8 (ganeshie8):

multiply the same components, add them together

ganeshie8 (ganeshie8):

v = <3, 4, 7>, w = <6, -9, 7> v.w = 3x6 + 4x(-9) + 7x7 simplify

OpenStudy (psymon):

And yet it says dot product O.o

OpenStudy (anonymous):

my bad

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