Find the Dot Product Of $\mathbf { u }$ And $\mathbf { v }$

question 55

Multiple Choice

Find the dot product of $\mathbf { u }$ and $\mathbf { v }$ .
$$\mathbf { u } = 9 \mathbf { i } - 5 \mathbf { j } - 9 \mathbf { k } , \mathbf { v } = - 2 \mathbf { i } + 6 \mathbf { j } + 5 \mathbf { k }$$

• A) \(- 93\)
• B) 4
• C) \(- 18 \mathbf { i } - 30 \mathbf { j } - 45 \mathbf { k }\)
• D) \(- 3\)
• E) \(7 \mathbf { i } + \mathbf { j } - 4 \mathbf { k }\)

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