Posted by Allen on Sunday, October 21, 2007 at 8:02pm.
Before I go on and give you the problenms let me explain. i am not some lazy kid trin to get people to do my homework over the internet. I am freshman that just recently skippeda garde in math and I need some help. The problems below are from my pop quiz out of the text book i gotta hand in on monday. I can't ahve my aad or mom checkin this cause they have no clue on this but i did the problems and need feed bac.
solve the system using linear combination method
12. 3x+ 2yz=8
3x+4y+5z=14
x3y+4z=14
(my answer was (1,1,3))
16. x+y2z=5
x+2y+z=8
2x+3yz=13
(my answer was infinite solution)
18. 2x+y+6z=1
3x+2y+5z=16
7x+3y4z=11
(my answer was in fraction form but she said no solutions were fractions)

Algebra 2  Reiny, Sunday, October 21, 2007 at 9:03pm
#12 and 16 are correct
check your arithmetic for 18
I got (4,3,2) and those values work for all 3 equations.
(You do know that you can check your answer yourself by merely substituting your values into each equation, don't you?)
Answer This Question
Related Questions
 Algebra 2  Before I go on and give you the problenms let me explain. i am not ...
 Math  he freshman class at a major university contains 5160 students. This was ...
 algebra  The freshman class at a major university contains 6438 students. This ...
 english  Relax. The kid’s been delivering the paper for, how long? Three, four ...
 Social Science  people have the right to refuse treatments in the United States...
 Hum/176  • Choose a form of popular media that you are passionate about. The ...
 statistics  In 2006, the General Social Survey asked, "Do you see yourself as ...
 statistics  At a small college it is known from previous years that 35% of all ...
 math  Freshman:Sophmore = 5:4 Sophmore:Juniors = 7:8 Juniors:Seniors = 9:7 The ...
 math  Freshman:Sophmore = 5:4 Sophmore:Juniors = 7:8 Juniors:Seniors = 9:7 The ...
More Related Questions