Select all the correct answers. Which vectors are unit vectors? U=(-1/3 sqrt(7/2),1/3sqrt(13/2))
U=(1/sqrt(3),-sqrt(2/3))
U=(1/2sqrt(5/3),-1/2sqrt(7/3))
U=(3/sqrt(7),-2/sqrt(7))
See attachment

it has changed from the width and the height.

step-by-step explanation:

hello :

by applying the distributive property :

6 × 4.3 = 6 × ( 4 + 0.3 )

            =   (6 ×   4) + (6 ×   0.3)

            = 24 + 1.8

6 × 4.3 = 25.8