Answer:
Around 19 rows
Step-by-step explanation:603/31= 19.40 so I'm not too sure
Answer:
(2/3,2)
Step-by-step explanation:
3*2/3+4
simplify 2=2
Answer:
Therefore the given vectors are orthogonal for b = 0,±3.
Step-by-step explanation:
If
and
are two vectors orthogonal, then the dot product of
and
will be zero.
i.e 
If
and 


Given two vectors are (-18,b,9) and (b,b²,b)
Let

and

Therefore,


=(-18).b+b.b²+9.b
= -18b+b³+9b
= b³-9b
Since
and
are orthogonal. Then
= 0.
Therefore,
b³-9b= 0
⇒b(b²-9)=0
⇒b =0 or b²=9
⇒b=0 or b =±3
Therefore the given vectors are orthogonal for b = 0,±3.