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
Paha777 [63]
3 years ago
15

Zane performs the elementary row operation represented by R2-½R1 on matrix A.​

Mathematics
2 answers:
UkoKoshka [18]3 years ago
5 0

Answer:

[2 5 0]

[-7 -11/2 12]

Step-by-step explanation:

We want to perform elementary row operation represented by R2 - ½R1 on matrix A in the figure attached.

Now, matrix A is given as;

[2 5 0]

[-6 -3 12]

Now, R1 is row 1 = [2 5 0]

R2 is row 2 = [-6 -3 12]

Thus, R2 - ½R1 = [-6 -3 12] - ½[2 5 0]

This gives;

[-6 -3 12] - [1 5/2 0] = [-7 -11/2 12]

Now,[-7 -11/2 12] will be the new row 2 since it's just an elementary row operation we did on the Matrix A.

Thus, the new matrix is now;

[2 5 0]

[-7 -11/2 12]

Anastaziya [24]3 years ago
3 0

Answer:

Its actually,

−7   −11/2   12

−6    −3     12

I just took the quiz :)

You might be interested in
Solve 5x + 7 ≥ 2<br><br> (just putting this here since the question is too short)
ser-zykov [4K]
1. 5x + 7  \geq  2
2. 5x  \geq -5
3. x  \geq -1

1. Start
2. Subtract 7 from both sides
3. Divide both sides by 5
3 0
3 years ago
Read 2 more answers
In the formula a^2 + b^2 = c^2 , what is the value of a^2 ?
maksim [4K]
The answer would be A. c^2 – b^2 
If you need more help just ask :)
6 0
3 years ago
Read 2 more answers
Identify the terms, like terms, coefficients, and constants in each expression.
steposvetlana [31]
Simplifying
8 + 6t = 3t + t

Combine like terms: 3t + t = 4t
8 + 6t = 4t

Solving
8 + 6t = 4t

Solving for variable 't'.

Move all terms containing t to the left, all other terms to the right.

Add '-4t' to each side of the equation.
8 + 6t + -4t = 4t + -4t

Combine like terms: 6t + -4t = 2t
8 + 2t = 4t + -4t

Combine like terms: 4t + -4t = 0
8 + 2t = 0

Add '-8' to each side of the equation.
8 + -8 + 2t = 0 + -8

Combine like terms: 8 + -8 = 0
0 + 2t = 0 + -8
2t = 0 + -8

Combine like terms: 0 + -8 = -8
2t = -8

Divide each side by '2'.
t = -4

Simplifying
t = -4
8 0
3 years ago
Which of the following best describes the expression 7(y + 5)?
WINSTONCH [101]

Answer:

d The product of a constant factor of seven and a factor with the sum of two terms

Step-by-step explanation:

It's a product, and one of the factors is 7.

Answer:

d The product of a constant factor of seven and a factor with the sum of two terms

8 0
3 years ago
2. If x=2, y=3 find<br>value of <br>x²-5y+2​
Damm [24]

Answer:

-9

Step-by-step explanation:

Substitute the give values into the correct place in the equation.

Since x=2, y=3,

Place "2" in the x of the equation, and "3" into the y of the equation.

x²-5y+2​

= 2² - 5(3) + 2

= 4 - 15 + 2

= -9

5 0
3 years ago
Read 2 more answers
Other questions:
  • Can someone please help me with this question???
    9·1 answer
  • Find the equation of the line that is perpendicular to y=-1/5x-3 and contains the point (1,2).
    12·1 answer
  • Complete the equation of the line whose slope is 5 and y-intercept is (0,4)
    12·2 answers
  • State the domain of this relation
    5·2 answers
  • What is (0.12) (0.24)?
    10·1 answer
  • I need help with this problem, please<br> No links please :)
    15·1 answer
  • A factory produces bags of rubber bands. A bag of rubber bands has five different sizes: extra large (XL), large (L), medium (M)
    15·2 answers
  • What is 2/7/8 as an improper fraction
    7·1 answer
  • Sally goes fishing with Dan. They catch 6 trout. If they equally split up the trout, how may will each one get ​
    12·2 answers
  • Guys help me pls help me
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!