jacqwood
jacqwood
28-10-2014
Mathematics
contestada
3x+y+z=4
2x+2y+3z=3
X+3y+2z=5
Respuesta :
ollieboyne
ollieboyne
28-10-2014
1) 3x+y+z=4
2) 2x+2y+3z=3
3) x+3y+2z = 5
1)*2 6x + 2y + 2z = 8
2) 2x + 2y +3z = 3
- __________________
4x - z = 5
2)*3 6x + 6y + 9z = 9
3)*2 2x + 6y + 4z = 10
- __________________
4x+5z =-1
4x+5z = -1
4x - z =5
- ________
6z = -6
z = -1
If z=-1,
4x -(-1) =5
4x = 5-1
x = 4/4
x=1
3x+y+z=4
3(1)+y+(-1)=4
3+y-1=4
y=2
So z=-1, x=1, y=2
Answer Link
VER TODAS LAS RESPUESTAS ( 91+ )
Otras preguntas
how to do this diamond problem
A small lead sphere of mass m is hung from a spring of spring constant k. The gravitational potential energy of the system equals zero at the equilibrium positi
What is a molecule ?
The set of possible values of n is {-2,1,4}. What is the set of possible values of m if 3m = n - 7? A. {-27,-18,-9} B. {-9,-6,-3} C. {-6,-3,0} D. {-3,-2,-1}
You call the help desk to report a problem you are having on your computer. The technician asks you what operating system you are running. You know it is Window
write 16 3/5 as a decimal
a line is drawn through (-7,11) and (8,-9). The equation y - 11 = -4/3(x+7) is written to represent a line. Which equations also represent the line? y = x + 3y
The junior and senior class officers are sponsoring a homecoming dance. The total cost for the facilities and catering is $45 per person plus a $2500 deposit. W
3x + y = 3 ; solve for y
what are interpersonal skills
