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
How much would $500 invested at 6% interest compounded monthly be worth after 5 years? round your answer to the nearest cent.
Lady bird [3.3K]
Use this formula: A = P(1 + r/n)^nt, where A is the amount after interest (what you are solving for), P is the amount you invested originally, r is the rate at which it was invested in decimal form, n is the number of times the compounding occurs each year, t is the time in years it is invested. It would look like this: A = 500(1 + [.06/12])^12*5.  Do inside the parenthesis first to get 1 + .005 = 1.005.  Now raise that to the 60th power (12 times 5 is 60) to get 1.34558. Now multiply that by the 500 out front to get a total amount of $674.43
8 0
3 years ago
Read 2 more answers
a park covers a total area of 644 acres there are 482 more acres of woods than grassy areas in the park how many acres are there
maw [93]

Answer:

woods are 81 acres, grass 563 acres

Step-by-step explanation:


3 0
3 years ago
Find the price of a $35 basketball that is on sale for 50% off the regular price.
ELEN [110]
It's 17.50 just divide by 2

5 0
3 years ago
Read 2 more answers
Solve the equation 6/5y-10=-4<br> X=
defon

6/5y-10=-4

move -10 to the other side

sign changes from -10 to 10

6/5y-10+10= -4+10

6/5y= 6

Mutiply by 5/6 for both sides

6/5(5/6)y=6(5/6)

Cross out 6/5 and 5/6 , divide by 5 and 6 then becomes y

Cross out 5 and 6 on the right side

x= 5

Answer : x= 5

3 0
3 years ago
Bronson builds a rectangular deck for his friend. the width of the deck is 29 feet. the perimeter of the deck must be at least 1
olga_2 [115]
<span>Answer: a) Greater than or equal to 38 feet b)Since there is no restriction on the perimeter there exists many possible values for the length of the deck. Explanation: Given that the width of the deck is 29 ft. and the perimeter of the deck is at least 134 ft. 134 = 2(length + width) 134 = (2 x length) + (2 x 29) 134 = (2 x length) + 58 2 x length = 134 - 58 2 x length = 76 length = 76 / 2 length = 38 ft Thus, the inequality will be: a)Length ≥ 38 ft b)since there is no restriction on the perimeter there exists many possible values for length of deck.</span>
4 0
3 years ago
Other questions:
  • A right triangle has a hypotenuse of length 99 inches. if one angle is 34 degrees34°​, find the length of each leg.
    13·1 answer
  • What is the value of 1 tens and 16 ones
    14·2 answers
  • Y=x^2+8x+6 16x-2y=-44
    13·1 answer
  • Which of these values could be the slope of the line? Select two options.
    14·2 answers
  • write an equation in slope intercept form with the given information. slope=-1; passes through the point (-4,10)
    9·1 answer
  • the makers of a brand z 0aper towel claim that their brand is twice as strong as brand X and they use this graph graph to suppor
    12·2 answers
  • Если x=6 то y=<br>если y=-4 то x=​
    14·2 answers
  • Solve for x: 2x^2+3x=2
    7·2 answers
  • 14.) AXYZ is shown.
    8·1 answer
  • Let ​f(x)=x^2+6x−16​.<br> Enter the x-intercepts of the quadratic function in the boxes.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!