brendaad32
brendaad32 brendaad32
  • 21-09-2018
  • Mathematics
contestada

Vectors once again right answers only PLEASE HELP ME THANK YOU

Vectors once again right answers only PLEASE HELP ME THANK YOU class=

Respuesta :

frika
frika frika
  • 21-09-2018

You have vector [tex]\vec{a}=(-3,2).[/tex]

The magnitude of the vector [tex]\vec{a}=(x_a,y_a)[/tex] can be obtained using formula:

[tex]|\vec{a}|=\sqrt{x_a^2+y_a^2}.[/tex]

Then

[tex]|\vec{a}|=\sqrt{(-3)^2+2^2}=\sqrt{9+4}=\sqrt{13}.[/tex]

Answer: correct choice is A.

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