Can someone please explain this question to me?

Thanks!

Results 1 to 5 of 5

- May 3rd 2009, 05:18 PM #1

- Joined
- Nov 2008
- Posts
- 618

- May 3rd 2009, 05:55 PM #2

u = AB = A(-5,7) to B(3,-5) indicates that vector u = (8,-12)

where u = (8,-12) 8 are horizontal units from A to B

AND -12 are vertical units from A to B

now $\displaystyle ||u+v||= \sqrt{(6+8)^2+ (3-12)^2}$

$\displaystyle = \sqrt{(14)^2+ (-9)^2}$

$\displaystyle = \sqrt{196+ 81}$

$\displaystyle = \sqrt{277}$

- May 3rd 2009, 06:16 PM #3

- Joined
- Nov 2008
- Posts
- 618

- May 3rd 2009, 07:25 PM #4

- May 3rd 2009, 07:43 PM #5

- Joined
- Nov 2008
- Posts
- 618