Consider the vectors a⃗ =4i⃗ +j⃗ −k⃗ ,b⃗ =i⃗ +j⃗ +5k⃗ ,c⃗ =i⃗ +4j⃗ −k⃗
d⃗ =−4i⃗ −j⃗ +k⃗ ,g⃗ =i⃗ −4j⃗ .
Which pairs (if any) of these vectors are

(a) Are perpendicular?

(Enter none or a pair or list of pairs, e. g., if a⃗ is perpendicular to b⃗ and c⃗ , enter (a, b),(a, c).)

(b) Are parallel?

(Enter none or a pair or list of pairs, e. g., if a⃗ is parallel to b⃗ and c⃗ , enter (a, b),(a, c).)

(c) Have an angles less than π/2 between them?

(Enter none or a pair or list of pairs, e. g., if a⃗ is at an angle less than pi/2 from b⃗ and c⃗ , enter (a, b),(a, c).)

(d) Have an angle of more than π/2 between them?

answer: answer is c!

ok i got to organize the

3/15 and 12/55

3*

aha

3*4 equals 12 but not

a: no

b:

8/24 12/35

no

gautie

it's c

5/18 = 25/90

5*5=25

18*5 = 90

hope that you!

one more happy customer!

< 3

step-by-step explanation:

guess at question:

a vertical line intersects the graph of g(x,y) = 0 at two points. what conclusion follows about the function f(x) implicitly defined by g(x,f(x)) = 0?

the domain of f(x) cannot include the x coordinate of any such vertical line.

informally, f(x) is not a function, and

g(x,y)=0 cannot be solved for y uniquely.

the relation r = {(x,y) such that g(x,y) = 0} is a function if

for all (a,b) ∊ r and (c,d) ∊ r, a=c implies b=d.

step-by-step explanation:

2 liters for 10   people

step-by-step explanation: