Question

Find absolute value V and absolute value U+V, given that u=-16j and v=-5i-2j

Answer 1

The value of:

U=-16j
V=-5i-2j

What's your question?

You should ask questions. It sounds that you're testing people. LOL.

Answer 2

The part where I said Find the... is my question haha. I dont know how to find it

Answer 3

absolute value of \(ai+bj\) is \(\sqrt{a^2 + b^2}\)

Answer 4

\(v = -5i - 2j\)

absolute value = \(\sqrt{(-5)^2 + (-2)^2}\)

Answer 5

simplify

Answer 6

so would I leave my answer as - square root of 29?

Answer 7

and how would I find absolute value of U+V? Thats the part I'm having trouble with

Answer 8

yes absolute value of v is sqrt(29)

Answer 9

first find U+V

Answer 10

\(u=-16j\)

\( v=-5i-2j \)

Answer 11

\(u + v = -16j - 5i - 2j\)

Answer 12

simplify

Answer 13

add like terms

Answer 14

\(u + v = - 5i - 18j\)

Answer 15

right ?

Answer 16

Yup thats what I got

Answer 17

take the absolute value of that

Answer 18

So I don't have to do anything else? I remember it being more complex in my math class

Answer 19

Ohhh

Answer 20

absolute value of \(-5i - 18j\) is ?

Answer 21

5i+18j?

Answer 22

no, this absolute value is different.

Answer 23

in vectors, absolute value means "distance"

Answer 24

absolute value of \(-5i - 18j\) is :

\(\sqrt{(-5)^2 + (-18)^2}\)

Answer 25

simplify

Answer 26

Ohhh sorry I got it now

Answer 27

good :)

Answer 28

So square root of 349?

Answer 29

sqrt(349) is \(\large \color{red}{\checkmark}\)

Answer 30

Cool! So that's all I need to do to get the answer?

Answer 31

yes !

Answer 32

Yay! Thank you!