Find || a ||. a = - A) $\| a \| = \sqrt { 7 }$ B) $\| a \| = \sqrt { 29 }$ C) $\| a \| = \sqrt { 5 }$ D) $\| a \| = \sqrt { 28 }$ E) $\| a \| = \sqrt { 50 }$

Name: Find || a ||. a = - A) $\| a \| = \sqrt { 7 }$ B) $\| a \| = \sqrt { 29 }$ C) $\| a \| = \sqrt { 5 }$ D) $\| a \| = \sqrt { 28 }$ E) $\| a \| = \sqrt { 50 }$
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Question

Find || a ||. a = - < 2, - 5 >
A) $\| a \| = \sqrt { 7 }$
B) $\| a \| = \sqrt { 29 }$
C) $\| a \| = \sqrt { 5 }$
D) $\| a \| = \sqrt { 28 }$
E) $\| a \| = \sqrt { 50 }$

Quizplus · Accepted Answer

The magnitude of a vector a = is calculated as ||a|| = √(x² + y²). For a = <-2, -5>, ||a|| = √((-2)² + (-5)²) = √(4 + 25) = √29.

Find || a || ∥a∥=7\| a \| = \sqrt { 7 }∥a∥=7​

Find || a || $\| a \| = \sqrt { 7 }$