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
mario62 [17]
2 years ago
15

Using Cramer's Rule, what are the values of x and y in the solution to the system of linear equations below? -2x + 3y + z = 7 -4

x - y -2z = 15 x + 2y +3z = -7
Mathematics
1 answer:
yanalaym [24]2 years ago
5 0

Answer:

x = -3

y = 1

z = -2

Step-by-step explanation:

-2x + 3y + z = 7

-4x - y -2z = 15

x + 2y +3z = -7

|-2 3 1|

|-4 -1 -2|

|1 2 3|

Determinant of this from online determinant calculator is;

D = 21

For Dx, we have;

|7 3 1|

|15 -1 -2|

|-7 2 3|

Determinant of this from online determinant calculator is;

Dx = -63

For Dy, we have;

|-2 7 1|

|-4 15 -2|

|1 -7 3|

Determinant of this from online determinant calculator is;

Dy = 21

For Dz, we have;

|-2 3 7|

|-4 -1 15|

|1 2 -7|

Determinant of this from online determinant calculator is;

Dz = -42

From creamers rule;

x = Dx/D

y = Dy/d

z = Dz/d

Thus;

x = -63/21

x = -3

y = 21/21

y = 1

z = -42/21

z = -2

Thus,

x = -3

y = 1

z = -2

You might be interested in
I need help fasst plz help will give brainliest!!!
guapka [62]

Answer:

B

Step-by-step explanation:

3 0
3 years ago
Please help please cfgyy
Alenkinab [10]
3x- 11 +59 = 90
3x + 48 = 90
3x +48-48 =90-48
3x = 42
3x/3 = 42/3
x= 14

<MNQ = 3x -11
<MNQ = 3(14)-11
<MNQ = 42-11
<MNQ = 31
7 0
3 years ago
Chris correctly measured the length of a lone segmentand rounded his answer​
Airida [17]

Answer:

how am I supposed to help?

Step-by-step explanation:

Your question is a statement.

6 0
3 years ago
Please do all of these :)
wariber [46]
A SCATTER PLOT IS JUST A DOT PLOT
6 0
3 years ago
Sandy multiplies 2*5*7*2*5*7*2*5 and writes the product as a counting number.What is the sum of the digits of this counting numb
DiKsa [7]

Answer:

The sum of the digit of the product is 13

Step-by-step explanation:

Given

2*5*7*2*5*7*2*5

Solving (a): The product

Product=2*5*7*2*5*7*2*5

Product=49000

Solving (b): The sum of the digits

Sum = 4 + 9 +0 +0+0

Sum = 13

6 0
2 years ago
Other questions:
  • In whole milk, 13 parts out of 400 are milk fat. In 2% milk, 1 part out of 50 is milk fat. Which type of milk has more milk fat
    10·2 answers
  • Samara buys a video game for $56.00 she also buys a book. The price of video game is 8 times as much as the price of the book. W
    14·2 answers
  • Y = 4x + 13<br> is this a function
    9·1 answer
  • Lamar and Mimi are in the same math class. The table shows their scores on 6 math tests.
    14·1 answer
  • A rectangle has an area of x^2 -6x -7 and a width of x-7 what’s the length
    15·1 answer
  • Hello ! I need a solution for this exercise: either 1≤x≤2 and let A = -3 + 8 / (x + 1) -2x² Show that -9≤A≤-1
    5·1 answer
  • Juan is reading a 312-page book for school. He reads 12 pages each day. How long will it take him to finish the the the book.it
    12·2 answers
  • Triangle abc is an isosceles triangle in which ab=ac what is the perimeter of abc
    12·1 answer
  • 3x-1=5x+10. and the X= -5 1/2
    10·1 answer
  • Find the Equation to the line below
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!