Question 3 (1 point)\ Saved\ Select all statements that are true.\ If vectors

u

and

v

have length 2 and 4 , respectively, then the length of

u-v

can be 7 .\ If vectors

u

and

v

have length 2 and 4 , respectively, then the length of

u+v

must be 6 .\ If vectors

u

and

v

have length 1 and 4 , respectively, then their dot product can be

(1)/(4)

.\ If vectors

u

and

v

have length 1 and 4 , respectively, then their dot product can be -4 .\ If vectors

u

and

v

have length 1 and 4 , respectively, then the length of

u+2v

can be 8 .