samrawit samrawit
  • 13-01-2015
  • Mathematics
contestada

write and solve a revised system
-5x-2y=6
3x+6y=6

Respuesta :

luana
luana luana
  • 13-01-2015
[tex] \left \{ {{-5x-2y=6\ \ | *3} \atop {3x+6y=6}} \right. \\\\ \left \{ {{-15x-6y=18} \atop {3x+6y=6}} \right. \\+----\\addition\\\\ -12x=24 \ \ \ \ | divide\ by\ -12\\\\ x=-2\\\\ 2y=-5x-6\ \ \ | divide\ by\ 2\\\\ y=\frac{-5x-6}{2}\\\\ y=\frac{-5*(-2)-6}{2}=\frac{4}{2}=2[/tex]
Answer Link

Otras preguntas

point (-3,2) reflected across the x-axis
How has the discovery of the toumai skull affected what some scientists think about hominids and human delvelopment
How does a story’s time period provide the reader with a reference point?
A compromise between politicians takes place when both sides _________________. a. meet in the middle by giving in on some points. b. end the disagreement so th
What was the purpose of texas war of independence?
What's the answer ???
A Customer purchased three pairs of pants for $17.00,$18.95 and $20.50 (Prices include taxes). How much change should you give back if they paid with a $50 and
What was the BAI? What is one discovery that the BAI made?
Stephanie has a banner that is 32 feet long. She wants to divide it equal parts. What will be the length of each part?
What duty must the President perform in the first few weeks of each new year that explains to the American people his vision for the United States?