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

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

Correct Answer:

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