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
-BARSIC- [3]
3 years ago
11

Use Gauss-Jordan elimination to solve the following linear system.

Mathematics
2 answers:
Sliva [168]3 years ago
7 0

Answer:

The correct option is<u> C) (4,4)</u>

Step-by-step explanation:

Given linear system is :

-x+6y=20

-x+3y=8

Solve using Gauss - jordan elimination

It is an algorithm that can be used to solve systems of linear equations and to find the inverse of any invertible matrix.

\:\begin{pmatrix}-1&6&20\\ \:-1&3&8\end{pmatrix}

\mathrm{Reduce\:matrix\:to\:row\:echelon\:form}\:\begin{pmatrix}a&\cdots &b\\ 0&\ddots &\vdots \\ 0&0&c\end{pmatrix}

Divide row(1) by -1

\begin{pmatrix}1&-6&-20\\ \:-1&3&8\end{pmatrix}

Add row(1) to row(2)

\begin{pmatrix}1&-6&-20\\ \:0&-3&-12\end{pmatrix}

Divide row(2) by -3

\begin{pmatrix}1&-6&-20\\ \:0&1&4\end{pmatrix}

Add (6 * row(2) ) to row(1)

=\begin{pmatrix}1&0&4\\ 0&1&4\end{pmatrix}

Hence the corresponding values of x and y are <u>(4, 4)</u>

Therefore, the correct option is<u> C) (4,4)</u>

Sunny_sXe [5.5K]3 years ago
4 0
The answer would be C. (4,4)
You might be interested in
The times for five sprinters in a 50 meter dash were 6.72 seconds 6.4 seconds 6.08 and 7.03 seconds in 6.75 seconds right these
andreev551 [17]

Answer:

Fastest to slowest = 6.08 > 6.4 > 6.72 > 6.75 > 7.03

Step-by-step explanation:

The person who completes the 50-meter race within the shortest possible time is the fastest sprinter. Here, the third sprinter crossed the line in 6.08 seconds, whereas the 4th sprinter crossed the line in 7.03 seconds. That is why the third sprinter has won the race, and he becomes the fastest. On the contrary, the fourth person takes the most time to complete the race, meaning he is the slowest.

6 0
3 years ago
What is the slope of the line that passes through the points<br> (1, -3) and (4, 2)?
Vitek1552 [10]

in this situation it would be the last one or d.

6 0
3 years ago
The domain of f(x) is the set of all real values except 7, and the domain of g(x) is the set of all real values except -3. Which
Maurinko [17]

Answer:

The option is: <em>all real values except x = 7 and the x for which f(x) = -3</em>

Step-by-step explanation:

As the domain of f(x) is the set of all real values except 7. So it can be written as follows:

              Domain of f(x) = { x ∈ R | x ≠ 7}

As the domain of g(x) is the set of all real values except -3. So it can be written as follows:

              Domain of g(x) = { x ∈ R | x ≠ -3}

It is a common rule that the domain of a composite function (gºf)(x) will be the set of those input x in the domain of f for which f(x) is in the domain of g.

So, the option is: <em>all real values except x = 7 and the x for which f(x) = -3</em>

Keywords:  domain, composite function

Learn more domain and composite functions from brainly.com/question/2073574

#LearnwithBrainly

3 0
3 years ago
Answer, please. will rank brainliest.
JulijaS [17]

Answer:

2^3 or 5^5

Step-by-step explanation:

7 0
3 years ago
Square root of 1536 with divison method
11111nata11111 [884]

Answer:

39.191835884531

this is the square root

3 0
4 years ago
Other questions:
  • \Look at this series: 2, 1, (1/2), (1/4), ... What number should come next?
    14·1 answer
  • Give an example of a decreasing logarithmic function that has a positive y-intercept.
    13·1 answer
  • In Exercise,find the horizontal asymptote of the graph of the function.<br> f(x) = 7/1+5x
    9·1 answer
  • Find two numbers that add to get -14 and multiple to get 33.
    8·1 answer
  • Y = −x + 4
    5·1 answer
  • A carpenter wants to make a ladder, but he want to calculate the required wood for it. The distance between each step is 1 foot
    5·1 answer
  • What is the sum of angles JMK and KML?
    15·1 answer
  • Talia grouped the terms and factored out the GCF of the groups of the polynomial 15x2 – 3x – 20x + 4. Her work is shown below.
    9·2 answers
  • What’s the correct answer for this?
    11·2 answers
  • :)Answer in simplest radical form.(and show work please)
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!