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
Hunter-Best [27]
3 years ago
5

Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists.

Mathematics
1 answer:
son4ous [18]3 years ago
4 0
Using Gaussian elimination:
x + y + z = 9  / * ( - 2 )    / ( - 1 ) ( we will multiply by - 2 and add to the 2nd         2 x - 3 y + 4 z = 7      equation and multiply by - 1 and add to the 3rd equation ) 
x - 4 y + 3 z = - 2
-----------------------------
x + y + z = 9
    - 5 y + 2 z = - 11  / * ( - 1 )
    - 5 y + 2 z = - 11
---------------------------
x + y + z = 9
   - 5 y + 2 z = - 11
              0 z = 0
There are infinitely many solutions to the system of equations.
z = t,
- 5 y + 2 t = - 11
5 y = 11 + 2 t
y = ( 11 + 2 t ) / 2
x + ( 11 + 2 t ) / 2  + t = 9    / * 2
2 x + 11 + 2 t + 2 t = 18
2 x = 18 - 11 - 4 t
x = ( 7 - 4 t ) / 2
( x, y , z ) = (   (7 - 4 t ) / 2,   ( 11 + 2 t ) / 2,    t  )
You might be interested in
What is <br>2 divided by 192? ​
astra-53 [7]

Answer:

192/2 = 96 because is just the half of the number

5 0
3 years ago
POSSIBLE POINTS 10
Blizzard [7]

Answer: 2 hours

Step-by-step explanation:

If Candice can paint a room in 6 and Grace can paint one in 8 subtract  and 6 and get 2 hours

4 0
3 years ago
2/5 + 1/3= in Simplest form
expeople1 [14]

Thye have to have like denominators.

So it becomes, 6/15+5/15 which is equal to 11/15

6 0
3 years ago
Read 2 more answers
A strawberry that you left overnight at school started to grow mold. There
blondinia [14]

Answer: The molds density of the mold is 11:11

Step-by-step explanation:

4 0
2 years ago
Find the total surface area of the cube box below
zaharov [31]
The surface area of the cube is 24 feet.
5 0
3 years ago
Read 2 more answers
Other questions:
  • What is the coefficient of the term -2mnp
    13·2 answers
  • Which of the following does not represent the function f(x)=2x+3
    7·1 answer
  • What is 9/27 simplified
    9·1 answer
  • Need help plz ASAP! It’s due tomorrow! I will give branist
    6·1 answer
  • Investing in bonds! PLS HELP
    5·1 answer
  • How do you write 6x=7y in standard form
    11·1 answer
  • The surface area of a solid is 10 square feet. The dimensions of a similar solid are
    15·1 answer
  • Can you pls answer this
    7·2 answers
  • Need help! due today
    6·1 answer
  • Complete the following to describe how to draw to diagram to represent the answer 3÷3/5
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!