Seudónimo Seudónimo
  • 22-02-2018
  • Mathematics
contestada

Use the elimination to solve this equation.

2x+3y=55
9x+4y=105

Respuesta :

hoottootriot
hoottootriot hoottootriot
  • 22-02-2018
x=5 y=15 (5,15). 
This is how you do it:
-4(2x+3y=55): -8x-12y=-220
3(9x+4y=105):27x+12y=315

You add the two new equations together, canceling out the y values, and get the x value. Then, you go back and plug in the x value in the original equation to get the y value.

Answer Link

Otras preguntas

What can you infer from the fact that some 300 songs were written about Lindbergh's 1927 flight?
Our galaxy contains roughly 250000000000 stars. How many billion is this?
The richest discovery in the history of mining occurred in 1873. This so-called "Big Bonanza" made _______ the richest man in the world
Our galaxy contains roughly 250000000000 stars. How many billion is this?
what are the positive aspects of stereotypes, if any?
use the equation y= -2+1. complete each problem(0,_)      (-5,_)      (20,_)      (-68,_)
What is the largest part of the earth: the core,the mantle, or the crust
what are the positive aspects of stereotypes, if any?
What can you infer from the fact that some 300 songs were written about Lindbergh's 1927 flight?
What is 12/16 in it's lowest term