Ash0405
Ash0405
02-02-2015
Mathematics
contestada
Solve by substitution
X+3y=1 and -3x-3y=-15
Respuesta :
Аноним
Аноним
02-02-2015
[tex]x+3y=1\\ -3x-3y=-15\\ add\quad the\quad equ.\\ (x+3y)+(-3x-3y)=1-15\\ x-3x+3y-3y=-14\\ -2x=-14\\ x=\frac { -14 }{ -2 } \\ x=7\\ Let's\quad rewrite\quad the\quad equ.\\ 7+3y=1\\ 3y=1-7\\ 3y=-6\\ y=\frac { -6 }{ 3 } \\ y=-2[/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 98+ )
Otras preguntas
One large box of birdseed can feed half a dozen parrots for 15 days. For how many days can this same large box of birdseed feed 5 parrots.
At STP, both diamond and graphite are solids composed of carbon atoms. These solids have(1) the same crystal structure and same properties (2) the same crystal
A theme park has a log that can hold 12 people. They also have a weight limit of 1500 lbs per log for safety reason. If the average adult weighs 150 lbs, the av
A toy rocket is shot vertically into the air from a launching pad 9 feet above the ground with an initial velocity of 168 feet per second. The height h, in feet
In the ground state, which atom has a completely filled valence electron shell?(1) C (2) V (3) Ne (4)Sb
What was a major result in the Civil War?
Under which of the following circumstances does a president usually experience a reduction of political power?
Which condition causes ocean salinity to increase? A. river water flowing out into the ocean B. high levels of precipitation C. high levels of evaporation
In 2007, more people were killed in Chicago, IL, USA than soldiers in Iraq. True or False?
Which type of reaction occurs when a high energy particle collides with the nucleus of an atom, converting that atom to an atom of a different element? (1) addi
