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
almond37 [142]
3 years ago
5

Use row reduction to find the inverse of the given matrix if it exists, and check your answer by multiplication. hint [see examp

le 2.] (if the inverse doesn't exist, enter dne in all answer boxes.) 1 6 4 0 1 2 0 0 1
Mathematics
1 answer:
Marianna [84]3 years ago
3 0
The given matrix is
| 1 6 4 |
| 0 1 2 |
| 0 0 1 |

Create the augmented matrix.
|  1  6  4  |  1  0  0  | R1
|  0  1  2  |  0  1  0  | R2
|  0  0  1  |  0  0  1  | R3

R1 -> R1 - 6*R2
|  1  0 -8  |  1 -6  0  | R1
|  0  1  2  |  0  1  0  | R2
|  0  0  1  |  0  0  1  | R3

R1 -> R1 + 8*R3
|  1  0  0  |  1  -6  8  | R1
|  0  1  2  |  0   1  0  | R2
|  0  0  1  |  0  0  1  | R3

R2 -> R2 - 2*R3
|  1  0  0  |  1 -6  8  |
|  0  1  0  |  0  1 -2  |
|  0  0  1  |  0  0  1  |

The inverse is
|  1  -6  8 |
|  0  1  -2 |
|  0  0  1  |

Verification:
| 1 6 4 |  | 1  -6 8 |     | 1  0 0 |
| 0 1 2 |  | 0  1 -2 |  = | 0 1  0 |
| 0 0 1 |  | 0  0  1 |     | 0 0  1 |

You might be interested in
For the following right triangle, find the side length x
Aleks [24]

Answer:

x = 25

Step-by-step explanation:

b² + h² = x²

24² + 7² = x²

576 + 49 = x²

625 = x²

√625 = √x²

25 = x

7 0
3 years ago
Read 2 more answers
30 Points!!Need Help Please!!! Will give Brainliest!!!
mixer [17]

Since DC = 12, then EF also = 12.

Both AD and BC are indicated to be the same .

So AE = (24 - 12) / 2 = 12/2 = 6


Now you have a right triangle with height DE = 8 and base AE = 6


Using the Pythagorean Theorem we can now find AD:


AD = √(8^2 + 6^2)

AD = √(64 + 36)

AD =√100

AD = 10

3 0
3 years ago
Type the correct answer in each box. use numerals instead of words. the number of customers who come into julie's antique shop o
vladimir1956 [14]
She will also need the minimum value, the median, the upper quartile and the lower quartile.

The box will be drawn from the upper quartile to the lower quartile, with a vertical line at the median.  The whiskers will go from the box to the highest and lowest values.
3 0
2 years ago
Read 2 more answers
Solve for x: 2x + 3 + (-1) = x + 5
faust18 [17]

Answer:

x=3

Step-by-step explanation:

2x-x=5-3+1

x=3

I think that's it

5 0
3 years ago
Plzzzzzzzzz helpppppppp meeeeeeeeee
dalvyx [7]

Answer:

spenca idk the answer g

5 0
3 years ago
Other questions:
  • Given (x-1)^2=50, select the values of x
    15·1 answer
  • How do you successfully solve 9 divided by 0.
    13·2 answers
  • the drama club is performing a musical to benefit the children's cancer fund. tickets are $5 each and they received $565 in dona
    6·1 answer
  • HELP ME FAST!!!!!!!!!!!​
    11·1 answer
  • The point (x,y) is proportional to the point (2, 5).
    5·1 answer
  • Find the measurement indicated in the parallelogram.
    7·2 answers
  • Help me! Thanks! Show work too! Please!
    6·2 answers
  • Please help i’ll give brainliest!!! thanks
    6·2 answers
  • What is 1 2/3 - (- 5 2/3)?
    10·2 answers
  • Can someone help in graphing this equations?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!