Question

Check 3 questions for me?

Answer 1

Find 8u
u = < -7, -2 >

8< -7, -2 >
< -56, -16 >

Answer 2

P = (5, 1)
Q = (13, 5)
Find the component form and magnitude of PQ

Component form:
13 - 5, 8 - 1
(8, 7)

Magnitude:
\(\sf\sqrt{(v_1)^2+(v_2)^2}\\\)
\(\sf\sqrt{8^2 + 7^2}\\\sqrt{64+49}\\\\\sqrt{113}\)

Answer 3

U = < 4, -8 >
V = < -2, 6 >
Find u + v

< 4 - 2, 8 + 6 >
< 2, 14 >

Answer 4

@YanaSidlinskiy

Answer 5

@Directrix

Answer 6

@perl will you check these?

Answer 7

ok one moment

Answer 8

first one is correct, 8u

Answer 9

Ok, thanks :)

Answer 10

P = (5, 1) Q = (13, 5)
Find the component form and magnitude of PQ
PQ = Q - P
= (13,5) - (5,1)
= ( 13 - 5 , 5 -1 )
so there is a small mistake
< 8, 4> should be PQ

Answer 11

Oh wow, thats for checking that, I have no idea where I got 8 from :P