Evaluate the expression: v ⋅ w Given the vectors: r = <5, -5, -2>; v = <2, -8, -8>; w = <-2, 6, -5>

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Evaluate the expression: v ⋅ w Given the vectors: r = <5, -5, -2>; v = <2, -8, -8>; w = <-2, 6, -5>

Mathematics
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multiply first components multiply second components multiply third components --- add those products to find the dot product
so i multiple all three together? even the r?
v dot w the first components of both v and w are 2 and -2 respectively

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the second components of both v and w are -8 and 6 respectively
the third components of both v and w are -8 and -5 respectively
so do i just ignore the r? thats what im asking. i know how to do v dot w but they also gave me the vector of r
you have v dot w where is r? why do you want to include it?
i dont know. they just gave it to me in the equation and it confused me.
I don't see it in v dot w I just v and w
v dot w means you use v and w
there is no r in "v dot w" so you don't use r
are you able to finish the problem now?
did you add the products I mentioned above: 2(-2)+(-8)(6)+(-8)(-5)?
yeah i did. i got -92
-4-48+40 should give you something else

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