alyssa80112 alyssa80112
  • 13-11-2017
  • Mathematics
contestada

What is the solution to the system of equations 2x-5y=-5 and x+2y=11?

Respuesta :

altavistard
altavistard altavistard
  • 14-11-2017
Let's eliminate x in the system 


 2x-5y=-5
 x+2y=11

To do this, mult. the 2nd eqn by -2:

 2x-5y=-5 
 -x-4y=-22
---------------
   -9y= -27.  This yields y = 3.

Now subst. 3 for y in either of the original equations to determine x.

Write your answer as an ordered pair:  ( ?  , 3).
Answer Link

Otras preguntas

6xy^-2 / x^-3 = 6x ___ / y^2  ,  fill in the blank .  Please help .
Why can we see objects in space? Like the Sun, stars, the moon and other planets.
What was the first group to settle Hawaii?
Why might political parties write platforms before presidential elections
Estimate 2/5 of 128. Plz explain
according to the author, what were condition like in europe during the 800's
what is the electron configuration of Ca2+
In a particular class of 27 students,17 are men.what fraction of the student in the class are men
Some social analysts believe that postindustrial society will be followed by a biotech society. Such a society would be characterized by ________.
where dose Michael Foreman visit for inspiration for his work