Answer: the last one
Step-by-step explanation:
An = a1 * r^(n-1)
a1 = first term = -5
r = common ratio = -4
so ur formula is : an = -5 * -4^(n-1) <==
Answer with Step-by-step explanation:
We are given that the set of vectors
is lineraly dependent set .
We have to prove that the set
is linearly dependent .
Linearly dependent vectors : If the vectors 
are linearly dependent therefore the linear combination

Then ,there exit a scalar which is not equal to zero .
Let
then the vector
will be zero and remaining other vectors are not zero.
Proof:
When
are linearly dependent vectors therefore, linear combination of vectors of given set

By definition of linearly dependent vector
There exist a scalar which is not equal to zero.
Suppose
then 
The linear combination of the set 

When 
Therefore,the set
is linearly dependent because it contain a vector which is zero.
Hence, proved .
Answer:
I think 54 because it's not a squared number
Step-by-step explanation:
8x8=64
9x9=81
12x12=144