1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
MariettaO [177]
3 years ago
13

Use the augmented matrix to determine if the linear system is consistent. Is the linear system represented by the augmented matr

ix​ consistent? A. ​Yes, because the rightmost column of the augmented matrix is a pivot column. B. ​Yes, because the rightmost column of the augmented matrix is not a pivot column. C. ​No, because the rightmost column of the augmented matrix is a pivot column. D. ​No, because the rightmost column of the augmented matrix is not a pivot column.
Mathematics
1 answer:
Crazy boy [7]3 years ago
8 0

Answer:

The correct option is (A).

Step-by-step explanation:

If the reduced row echelon form of the coefficient matrix of a linear system of equations in four different variables has a pivot, i.e. 1, in each column, then the reduced row echelon form of the coefficient matrix is say A is an identity matrix, here I₄, since there are 4 variables.

\left[\begin{array}{cccc}1&0&0&0\\0&1&0&0\\0&0&1&0\\0&0&0&1\end{array}\right]

Then the corresponding augmented matrix [ A|B] , where the matrix is the representation of the linear system is AX = B, must be:

\left[\begin{array}{ccccc}1&0&0&0&a\\0&1&0&0&b\\0&0&1&0&c\\0&0&0&1&d\end{array}\right]

Now the given linear system is consistent as the right most column of the augmented matrix is a linear combination of the columns of A as the reduced row echelon form of A has a pivot in each column.

Thus, the correct option is (A).

You might be interested in
What is the percentage of 15 out of 75
Archy [21]

 \frac{15}{75}= \frac{3}{15}= \frac{1}{5}= \frac{20}{100}



The answer is 20%


4 0
3 years ago
Read 2 more answers
Maya has 5 over 6 cup of ice cream. How many 1 over 4 -cup servings are in 5 over 6 cup of ice cream?
Drupady [299]
The answer is c because it’s not a or d and maybe not b so ye c
6 0
2 years ago
Read 2 more answers
I wish to have $10,000 at the end of 8 yers in a bank offering a simple interest rate of 7.5% per year. How much should I deposi
kolezko [41]

Answer:

You have to invest  $6,250

Step-by-step explanation:

very simple applying the simple interest formula which is

A = P (1 + rt)

Given data

A, final amount =  $10,000

P, initial principal balance=  ?

r, annual interest rate = 7.5%

t, time (in years)= 8 years

we can substitute our given data to find the principal needed.

10000= P(1+0.075*8)\\\10000= P(1.6)\\\

Divide both sides by 1.6 we have

P= \frac{10000}{1.6} \\\P= 6250

P= $6,250

3 0
3 years ago
What is the answer to 3 1/3=5a please show work
marshall27 [118]
it is 3 divided by 31 then subtract 31 with 30 which will give you 10R1

7 0
3 years ago
Express the number 47 as a difference of two squares.
Sergio039 [100]
Express<span> the prime </span>numbers<span> 7, 15, and 261 as the </span>difference of two squares
4 0
3 years ago
Other questions:
  • What ratio is equivalent to 8 to 2
    13·2 answers
  • What ordered pair is missing from the input-output table?
    7·2 answers
  • HELP PLEASE SOMEONE ANSWER THIS PLEASE
    11·1 answer
  • The question is in the picture. Please answer ASAP
    10·1 answer
  • What is the sum of the geometric sequence 1,3,9... if there were 11 terms?
    6·1 answer
  • Amber drove to her uncle's house. The graph shows the distance she travelled over time.
    8·1 answer
  • Riley read five times as many pages as Jessica in the reading contest. If they read a total of 2,838 pages did Riley read ?
    11·2 answers
  • Simplify a-c when a=5 c= -1​
    15·2 answers
  • What is the effect on the graph of f(x) = 1 when it is transformed to
    13·2 answers
  • Find x:<br> (4x^2-25)^2-9(2x-5)^2=0
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!