sanabiljk sanabiljk
  • 06-12-2020
  • Mathematics
contestada

Solve the following using
matrix inversion method
7x-2y=17
3x+4y=17

Respuesta :

student11221 student11221
  • 06-12-2020

Answer:

y=2

Step-by-step explanation:

7x-2y=17....1

3x+4y=17...2

multiply 1by 2

then

subtract 1 and 2

14x -4y=34

3x +4y=17

from this

17x=51

x=3

then from 1

7(3)-2y=17

21-2y=17

-2y=17-21

-2y=-4

y=4/2

y=2

Answer Link

Otras preguntas

what is aas congruence?
What are the sides of the DNA ladder made of?
determine whether the system of linear equations has one and only one solution, infinitely many solutions, or no solution. Find all solutions whenever they exis
Find the LCM of 8,9, and 12
7 - 3 ( 5t - 10 ) = 67
What are the sides of the DNA ladder made of?
A dealer sells a certain type of chair and a table for $40. He also sells the same sort of table and a desk for $83 or a chair and a desk for $77. Find the pric
you hav designed a picture that is shaped as a square. the dimensions of your picture  are 6x6in. you want to make it into a poster with dimensions 13x13in. the
Find the LCM of 8,9, and 12
What are the sides of the DNA ladder made of?