## DominiRican1013 one year ago Evaluate the following expression: -1(5,-1) + 2(1,1) A. (5,-2) B. (-3,3) C. (5,-2) D. (7,1)

1. mathmate

Hint: use the scalar multiplication property: s(a,b)=(sa+sb). For example, 5(-2,1)=(5(-2),5*1)=(-10,5)

2. DominiRican1013

I need help with a different question

3. anonymous

kool what is it

4. DominiRican1013

What is the length (magnitude) of the vector (-3,2) A. $\sqrt{2}$ B. $\sqrt{13}$ C. 0 D. 3

5. DominiRican1013

Does anyone know this?

6. anonymous

im working it out hold up please

7. DominiRican1013

it says im typing but i wasnt lol

8. DominiRican1013

is it square root of 13

9. DominiRican1013

It was square root of 13 thank you for trying to help though :D

10. anonymous

ight finally its and nvm u got it i tried damn

11. DominiRican1013

You gt a medal for trying though :D

12. DominiRican1013

I have another question though

13. DominiRican1013

Evaluate the dot product of (2,4) and (1,-2)