briannalebeaux briannalebeaux
  • 02-05-2022
  • Mathematics
contestada

What is the solution of the system? Solve using matrices. 25 points

x+2y=9
x+y=1

Respuesta :

asias3802
asias3802 asias3802
  • 02-05-2022

Answer:

x = -7 and y=8

Step-by-step explanation:

soln

using by elimination method

1|x+2y=9

1| x+y=1

|x+2y=9

-|x+y=1

x-x+2y-y=9-1

0+y=8

y=8

1|x+2y=9

2|x+y=1

|x+2y=9

-|2x+2y=2

x-2x+2y+2y=9-2

-x=7

divide -1 both side with the make value of x

x=-7

therefore x=-7 and y=8. this is my answer

Answer Link

Otras preguntas

Explain how you can round 25.691 to the greatest place
the total resistance is an electrical circuit consisting of three heater elements is 14.7 ohms.the resistance of two heater elements are 5.57 ohms and 4.91 ohms
All the knowledge and values shared by a society are a part of its _____.
Which of these characteristics differentiates electrons from protons and neutrons? a. They do not move. b. Electrons are larger. c. Electrons are not in a fi
Simplify 3(0.3x + 0.1) + 0.2x
What does ¿El Día de San Valentín es el trece de enero? mean?
what are two decimals to 0.9
What Is The Property Of (20 x 18) x 5 = 20 x (18 x 5) Please Tell Me The Answer Thank You If you did I need help With it
A number that cannot be written as a ratio of two integers
Which of these is a physical property of wood? a. Wood can burn. b. Wood can rot. c. Wood does not rust. d. Wood is softer than coal.