Find the magnitude of $$\vec{u}$$ [Enter an exact answer as an expression with a square root symbol] ![](http://admin.getprephub.com/media/editor/v10_20220912191629372785.png)

$$\vec{u}=(5,2)-(2,9)$$ $$\vec{u}=(3,-7)$$ $$\|\vec{u}\|=\sqrt{3^{2}+(-7)^{2}}=\sqrt{9+49}=\sqrt{58}$$.

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Question

Difficulty Level:

Easy

MCQ

Find the magnitude of $\vec{u}$ [Enter an exact answer as an expression with a square root symbol]

Select all that apply :

$\sqrt{58}$

$\sqrt{52}$

$\sqrt{50}$

$\sqrt{61}$

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