Answer:
[tex]\sqrt{65} = 8.06[/tex]
Step-by-step explanation:
Assuming u = <4, 7> then the coordinates of the vector are 4 and 7, then we must apply the magnitude formula.
[tex]\sqrt{4^{2} + 7^{2} } =\sqrt{16 + 49} = \sqrt{6\\5}[/tex]
So, the answer is 8.06 (if you round to hundredths place... if more is required simply insert [tex]\sqrt{65\\}[/tex] into your calculator).
