check my math? doing vectors. llvll= -5^+7^ llvll= 25 + 49 llvll= 74 llvll= 8.6

$$\vec{v} = \begin{pmatrix}-5\\7 \end{pmatrix}

\| v\| = \sqrt{(-5)^2+7^2}= \sqrt{25+49}= \sqrt{74} \approx 8.60$$

Correct answer.....

Let's "clean it up" a little

v = <5,7>

llvll = √(5² + 7²) = √(25 + 49) = √(74) ≈ 8.6

A little better, huh???