Question

Can somebody check this quick vector problem?

Answer 1

I know it's not the first option because I picked that and it was wrong. I've had two people help me with this and they've got that answer but I keep getting the one I picked.

Answer 2

okay i can help you

Answer 3

Okay cool, could you see if what I picked is right?

Answer 4

did you plug it in?

Answer 5

Yes I got <40, 72> - <12, 16> = <28, 56>

Answer 6

looks good; @mathmale can you double check so I dont feel stupid if im wrong?

Answer 7

@mathmale

Answer 8

Let's quickly go thru this problem again: Please multiply vector u by -8.

Result?

Next, multiply vector v by -2. Result?

Then add the 2 results together.

-8<-5,-9> = ?

-2<6,8> = ?

Sum of the above 2 vectors:

Answer 9

I still got <40, 72> + <-12, -16> = <28, 56>

Answer 10

@mathmale