Question

Solve the following system using matrices. Round to 3 decimal places when necessary.
2.3x+3.1y=10.8
-3.05x+4.2y=-2.1

Answer 1

| 2.3 3.1 | | x | = |10.8|
| -3.05 4.2| | Y | |-2.1|

Answer 2

These are the multiple choice answers:

A. x = -2.032, y = 1.976

B. x = -189.512, y = 137.122

C. x = 2.714, y = 1.471

D. x = 2.032, y =1.976

Answer 3

first find the inverse matrix of the first matrix with the numbers...
then pre multiply the inverse matrix on both sides...
it should be like this
A is the first matrix
X is the matrix with the variables
and B is the matrix on the other side of equation
A X = B
I X = A^-1 B
X = A^-1 B

Answer 4

You could've solved this using system of equations, I got C

Answer 5

... So it's C??

Answer 6

I got an estimated C answer

Answer 7

ok.... Imma go with that then... (: Thanks again!!!

Answer 8

you is welcome :3