Posted by Jasmine202005 on Sunday, October 22, 2006 at 8:55pm.
How do i solve inequalitites with three variables. I still can't figure it outplease help.
THE ANSWERS ARE3,-2,1 HOW DID THEY GET THAT ANSWER.
This can be solved a number of ways.
y= z+3 or x= 1-z-3
In the third equation , put those two things for x, and y.
then solve for z. Then go back and solve for x and y.
I've done that already such as
the book states the following
that the answer is -x-y=-1
how did they get there after adding equation 2 and three
Substitute x = 1-y and z = y+3 in the third equation. Then you get an equation in y only:
2(1-y) + 3y + (y+3) = 1
2y + 5 = 1
y = -2
Then use the equations for x and z again.
x = 1-(-2) = 3 etc.
Answer this Question
- to annonymus can you help me with math - How do i solve inequalitites with three...
- TO DRWLS/MATH HELP PLEASE - How do i solve inequalitites with three variables. I...
- math - How do i solve inequalitites with three variables. I still can't figure ...
- Math Help Please - How do i solve inequalitites with three variables. I still ...
- a.p. calculus help please! - My a.p. calculus teacher doesn't know how to do ...
- Algebra - I was given this problem to solve and no matter what order I multiply ...
- Basic Math - I forgot how to solve for two variables... Please check if I solved...
- Precalculus - I asked this yesterday but I was told my answer was incorrect by ...
- 8th Grade Algebra: Answer Check - Find the length of the 3rd side of each right ...
- Algebra - define the following new variables X to A =W X to B =X Y to A =Y Y to ...