Th matrix is missing. The matrix is :

Solution :
The column of the matrix are
,
, 
Now each of them are vectors in
. But
has dimensions of 2. But there are 3 column vectors, hence they are linearly dependent.
Therefore, the column of the given matrix does not form the
as the set contains
than there are entries in each vector.
Therefore, option (D) is correct.
Answer:
Systematic sampling
Step-by-step explanation:
An EPA contractor needing to test the concentration of a substance in ten samples out seventy samples provided form a single source at regular time intervals.
For the contractor to effectively carry out the testing he has to employ a Non-probability system of sampling which is called Systematic sampling, because in systematic sampling we can assume the population size (x ) which in this case is 70 and the sample size( n ) to be 10
He will have to select ; ( x / n )^th of the sampling frame for best results
Answer:
7
-
8
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given [Missing details]
Spencer's expenses


Required:
An estimate for the amount spent on clothing
To do this, simply multiply the clothing percentage by the total amount.



Approximate

Step-by-step explanation:
a) 4.67 × 10^6
b) 17.4? I'm not sure what power 10 is held to
c) what is " 10° " ?