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
leva [86]
3 years ago
13

Write the system in a matrix equation. Then, find the determinant of the matrix containing the coefficients.

Mathematics
1 answer:
Shtirlitz [24]3 years ago
5 0

Answer:

See below for the matrix

D = 100

Step-by-step explanation:

\left[\begin{array}{cccc}3&2&1&-8\\-1&-2&4&7\\1&-6&-3&15\end{array}\right]

         3    2    1

D =   -1    -2    4    =   3(-2)(-3) + 2(4)(1) + 1(-1)(-6)  

         1    -6   -3

                                    - 1(-2)(1) - 3(4)(-6) - 2(-1)(-3)

                           =  18 + 8 + 6 + 2 + 72 - 6

                           =  100

Sorry, I can't type the vertical bars.

I hope this is what you are looking for.

   

You might be interested in
What is the length of x in the diagram below? 5/√3 10/√3 5√3 10
yan [13]

tyyyyyyyyyyyyyyyyy hhh ;u ;ug ;ug u f l6r; 7 p7 fhj 69 position

4 0
3 years ago
The square root of 5x equals 10<br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B%3F%7D%205x%20%3D%2010" id="TexFormula1" title
Mazyrski [523]
X = 20

Square both sides:
5x = 100
x = 20
6 0
3 years ago
How can you solve the equation 8x = 2x + 2 graphically?
ehidna [41]

subtract 2x from both sides... 6x=2 divide by 6 = .3

3 0
3 years ago
What is the slope of the line through the points (4, 2) and (-16, -6)?
Harrizon [31]
Gradient = change in y /change in x so -6-2 =-8 / -16-4 = -20 so -8/-20 = 0.4 so gradient = 0.4
3 0
2 years ago
945 round nearest ten
Pavlova-9 [17]
945 rounded to the nearest ten is 950
7 0
3 years ago
Read 2 more answers
Other questions:
  • A baseball stadium holds 42,000 people. The number for Saturday's attendance contains a 4 with a value 1/10 the value of the 4 i
    5·1 answer
  • The figures shows two parallel lines AB and DE cut by the transversals AE and BD::
    7·2 answers
  • PLEASE HELP ME !!!!!!!!!!!!
    8·1 answer
  • 60,310,507 in word form
    15·1 answer
  • What is the prime factorization of 48?<br><br> 4 × 12<br> 2 4 × 3<br> 2 3 × 3 2<br> 2 3 × 6
    8·1 answer
  • Which set of numbers could be the measures of
    14·1 answer
  • Find the value of y showing your steps or explaining your thinking. (2 pts.)​
    15·1 answer
  • I just need #10 answered please. Incase you can’t see it it says “what is the solution to the inequality for #9
    13·2 answers
  • The slope of the line below is-2. Which of the following is the point-slope
    10·1 answer
  • Sylvie finds the solution to the system of equations by graphing. y = A system of equations. y equals StartFraction 2 over 3 End
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!