## anonymous one year ago Let u = <-5, -9>, v = <6, 8>. Find -8u - 2v.

1. Loser66

|dw:1440973119169:dw|

2. anonymous

that is what I thought but that is not an answer choice

3. Loser66

sure!! because it is just the very first step to get the answer.

4. anonymous

$-8\vec u -2\vec v$$= -8 \langle -5~,~-9\rangle - 2\langle 6~,~8\rangle \\= \langle (-8 \cdot -5) + (-2 \cdot 6)~,~ (-8 \cdot -9) +(-2\cdot 8)\rangle$

5. Loser66

but you denied to step in, what can I do?

6. anonymous

7. anonymous

Thankyouuuu!

8. anonymous

No problem