Algebra 2

posted by .

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+ 2y-z=8
-3x+4y+5z=-14
x-3y+4z=-14

(my answer was (1,1,-3))

16. x+y-2z=5
x+2y+z=8
2x+3y-z=13

(my answer was infinite solution)

18. -2x+y+6z=1
3x+2y+5z=16
7x+3y-4z=11

(my answer was in fraction form but she said no solutions were fractions)

  • Algebra 2 -

    #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?)

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Algebra 2

    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 …
  2. english

    Relax. The kid’s been delivering the paper for, how long?
  3. Social Science

    people have the right to refuse treatments in the United States of America I know this... but in the United States of America does a kid have the right to refuse treatment even if the rightful guardian of the kid insists that the kid …
  4. Hum/176

    • Choose a form of popular media that you are passionate about. The media may be music, a book, or a movie. I advise you to choose a specific media. For example, rather than choosing film as a category, please select a specific film …
  5. statistics

    In 2006, the General Social Survey asked, "Do you see yourself as someone that tends to be lazy?
  6. statistics

    At a small college it is known from previous years that 35% of all college freshman start in college algebra. The new freshman class has 100 students in it, What is the probability that between 35 and 42 freshman will start in college …
  7. Math

    he freshman class at a major university contains 5160 students. This was a 20% increase over the size of the freshman class the year before. What was the size of last year's freshman class?
  8. math

    Freshman:Sophmore = 5:4 Sophmore:Juniors = 7:8 Juniors:Seniors = 9:7 The total is 2158, what is the amount of each grade?
  9. math

    Freshman:Sophmore = 5:4 Sophmore:Juniors = 7:8 Juniors:Seniors = 9:7 The total is 2158, what is the amount of each grade?
  10. algebra

    The freshman class at a major university contains 6438 students. This was a 26% decrease from the size of the freshman class the year before. What was the size of last year's freshman class?

More Similar Questions