Question

|3w| if w=5i+2j

Answer 1

\(|3w| = 3|w|\)

To find \(|w|\):

You can use pythagorean theorem to find the length of w.
So you have \(|w| = \sqrt{5^2+2^2}=\cdots\)

Answer 2

Does this help?

Answer 3

3|w| = 3 sqrt(29)