SJMHeat
SJMHeat
08-09-2017
Mathematics
contestada
How do I solve this?
Respuesta :
kphung76127
kphung76127
08-09-2017
Multiply the first equation by 2
4x-6y=16
Then add the equations to eliminate x
4x-6y=16
-4x+5y=-10
-y=6
y-=6
Plug the y value in
2x-3(-6)=8
2x+18=8
2x=-10
x=-5
Final answer: (-5,-6)
Answer Link
Cyu437
Cyu437
08-09-2017
2x -3y = 8 ---> y = 2/3x +-8/3
-4x +5(2/3x + -8/3) = -10
-4x + 10/3x + -40/3 = -10
-2/3x + -40/3 = -10
plus 40/3 on both side
=
-2/3x = 10/3
multiply both side by 3/-2
=
-5
x = -5 y = -6
y = sub x into orginal equation
Answer Link
VER TODAS LAS RESPUESTAS ( 96+ )
Otras preguntas
What advances did Mao Zedong's rule bring to China?
A substance that is composed entirely of atoms which all have the same number of protons in their nuclei is known as _______. A. an element B. a molecule
One of the powers the president has is the ability to appoint senators. approve pardons. appoint mayors. confirm judges.
Which theme would be advanced by the tone in the above passage best? A. Despite age and experience, some people never grow up. B. Childhood has a magical qualit
What is the relationship between concentration gradient and diffusion?
what is the sum of the numbers as the product of their GCF and another sum ( 30+54)
1. Victorious politicians' rewarding of their followers with government jobs is called ________. the civil service system. deregulation. the spoils syste
A small combination lock on a suitcase has 5 wheels, each labeled with the 10 digits 0 to 9. How many 5 digit combinations are possible if no digit is repeate
1. Victorious politicians' rewarding of their followers with government jobs is called ________. the civil service system. deregulation. the spoils syste
Butane, C4H10, reacts with oxygen, O2, to form water, H2O, and carbon dioxide, CO2, as shown in the following chemical equation: 2C4h10(g)+13O2(g)->10H2O(g)+
