Answer
$\lt -16,29\gt$ and $\sqrt {1097}$
Work Step by Step
The formula to find the magnitude of a vector is:
$|n|=\sqrt{n_1^2+n_2^2}$
Here, $-2u +5v=-2\lt 3,-2 \gt +5 \lt -2,5 \gt =\lt -16,29 \gt$
and $|\lt -16,29\gt|=\sqrt{(-16)^2+(29)^2}=\sqrt {1097}$
Hence, our final answers are: $\lt -16,29\gt$ and $\sqrt {1097}$
