tawandatorres
tawandatorres tawandatorres
  • 11-08-2016
  • Mathematics
contestada

3x+6y=30, 2x+7y=29 using elimination method

Respuesta :

Аноним Аноним
  • 11-08-2016
Solutions 

----- Solve using Elimination 

[tex]3x+6y=30 2x+7y=29[/tex] 

[tex]6x+12y=60 2x+7y=29[/tex] 

[tex]6x+12y=60 6x+21y=87[/tex] 

[tex] -9y=-27 [/tex] 

[tex]y=3 [/tex] 

Substitute y=3 into any of the two equations above 

[tex] 6x+12*3=60 [/tex] 

[tex]6x+36=60[/tex] 

[tex]6x=60-36 [/tex] 

[tex]6x=24[/tex] 

[tex]x= 24 / 6[/tex] 

[tex]x=4[/tex] 

[tex]x=4 y=3[/tex]

Answer Link

Otras preguntas

A stack of cards consists of seven red and four blue cards. A second stack of cards consists of eleven red cards. A stack is selected at random and three of its
As a result of French and Indian War A.Spanish settlement could expand throughout Florida. B.French settlement could expand east of the Mississippi River. C.Ame
The eighth notes The whites Black ones The round Choose one and no links
combine like terms, x-3+6
. Escriba una lista de 10 a 20 rasgos de clase que describan el entorno de su crianza. ¿Cuáles de estos parecen verdaderos rasgos de clase y cuáles parecen este
Write the standard form equation of a circle with a CENTER of (11, 21) and a RADIUS of 13.
PLEASEEEE HELP ME ASAP
A circle has a radius of 2 feet. What is the length of the arc subtended by a 15 degree central angle?
Does anybody know how to solve or what the answer is?
Need smb to do my work will give them 30 points for each assignment who tryna ds?