Use the Vectors $\mathbf { u } = \langle 2,4 \rangle$

question 100

Multiple Choice

Use the vectors $\mathbf { u } = \langle 2,4 \rangle$ , $\mathbf { v } = \langle - 4,5 \rangle$ , and $\mathbf { w } = \langle 5 , - 4 \rangle$ to find the indicated quantity.State whether the result is a vector or a scalar.
$( \mathbf { u } \cdot 2 \mathbf { v } ) \mathbf { w }$

• A)-96; scalar
• B) \(\langle 120 , - 92 \rangle\) ; vector
• C) \(\langle 120 , - 94 \rangle\) ; vector
• D) \(\langle 120 , - 100 \rangle\) ; vector
• E) \(\langle 120 , - 96 \rangle\) ; vector

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