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
agasfer [191]
2 years ago
5

Using Cramer's Rule, the solution to the system of equations

Mathematics
1 answer:
Schach [20]2 years ago
7 0

Using Cramer's rule it is found that Dx = -34.

In Cramer's rule, we have three matrices.

  • x is a matrix in which the first column is the coefficients that multiply x, and the second are the coefficients on the right side of the equality.
  • y is a matrix in which the first column is composed by the coefficients on the right side of the equality and the second is the coefficients that multiply y.
  • M is a matrix in which the first column is the coefficients that multiply x, and the second is the coefficients that multiply y.

In this problem, the system is:

6x - 5y = -4

-7x + 3y = -1

Matrix x is given by:

x = \left[\begin{array}{ccc}6&-4\\-7&-1\\\end{array}\right]

It's determinant is given by:

Dx = 6(-1) -(-4)(-7) = -6 - 28 = -34

Thus, Dx = -34.

A similar problem is given at brainly.com/question/24749091

You might be interested in
Music :<br> An online music store sells songs for $0.90 each.
yawa3891 [41]
And so the music is really cheap!

8 0
3 years ago
Read 2 more answers
Plot a point on the coordinate plane to represent each of the ratio values in the table. Time (h) Distance (km) able displaying
Effectus [21]

Answer:

Refer the attached graph.

Step-by-step explanation:

Given : Time (h) Distance (km) able displaying Time in hours in one column and Distance in kilometers in the other. The time column contains 1, 3, 6, and 9. The distance column contains 2, 6, 12, and 18.

To plot : The points on the coordinate plane.

Solution :

Time is independent variable so it is taken on x-axis.

Distance is taken on y-axis.

x    y  

1     2

3    6

6    12

9    18

When we plot these points in the coordinate plane, we get a linear equation.

The linear equation form is y=2x

Refer the attached graph.

4 0
2 years ago
What is the value of W in a exterior angle theorem
malfutka [58]

Answer:

26

Step-by-step explanation:

The sum of two interior angles in a triangle is equal to an exterior angle that is supplementary to the third interior angle.

so:

30 + 2w - 8 = w + 48

22 + 2w = w + 48 export like terms to the same side of the equation

2w - w = 48 - 22 subtract

w = 26

8 0
2 years ago
5 POINTS, 5 STARS, BRAINLIEST, AND THANKS
Aneli [31]
No cause it’s a curved line so it’s not direct
6 0
2 years ago
I got letter C as my answer, is that correct?
lisov135 [29]
Yes it is C if you do the math and simplify it that is what you’ll get
4 0
3 years ago
Other questions:
  • Write the common difference of an arithmetic sequence if a8 = ‒8 and a10 = ‒12 ? A. ‒4 B. ‒2 C. ‒1 D. 2
    9·1 answer
  • Please answer this question in the picture!
    12·1 answer
  • What is -4/7 times -5?
    9·2 answers
  • You estimate that a jar contains 68 marbles. The actual number of marbles is 60. Find the percent error. Round your answer to th
    5·1 answer
  • Consider the data set.
    12·1 answer
  • Can someone help finds the area of this figure
    10·1 answer
  • Please help me I will mark brainliest <br> Solve for X<br> 2 + 3.0-9=1-1+22<br> 1
    5·1 answer
  • Helppppppppppppppppppp
    7·1 answer
  • Word Questions - Fractions and Percents<br><br> HELP PLEASE
    7·1 answer
  • PLEASE PLEASEEEE!!!!!<br> Can anyone help me out with this???
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!