Question

what is the length (magnitude) of the vector (-4 2)
A. 5
B. 3
C. root 2
D. root 20

Answer 1

The length of the hypotenuse of a triangle, with side lengths of 4 and 2

Answer 2

\[\left| \left| <-4,2> \right| \right| = \sqrt{(-4)^2+2^2}\]

Answer 3

@triciaal

Answer 4

its precal @DanJS

Answer 5

@jim_thompson5910

Answer 6

root 20? @DanJS

Answer 7

yes