Use the Dot Product to Find the Magnitude of U $\mathbf { u } = \langle 2 , - 9 \rangle$

question 288

Multiple Choice

Use the dot product to find the magnitude of u. $\mathbf { u } = \langle 2 , - 9 \rangle$

• A) \(\sqrt { 89 }\)
• B) \(\sqrt { 83 }\)
• C) \(\sqrt { 85 }\)
• D) \(9\)
• E) \(\sqrt { 87 }\)

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Definitions:

Mulattoes

Historically referred to individuals of mixed African and European ancestry.

Northerners

Residents or natives of the northern part of a country or region, often distinct in cultural, social, or economic practices from those in the southern part.

Re-Admittance

The process of being allowed to return or gain entry again into a place, organization, or institution from which one was previously excluded or had left.

Black Codes

Laws passed in the southern United States after the Civil War, intended to restrict the freedoms and rights of African Americans and ensure a labor force.