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Spring98

  • one year ago

A student is trying to solve the set of two equations given below: Equation A: x + z = 6 Equation B: 3x + 2z = 1 Which of the following is a possible step used in eliminating the z-term? A. Multiply equation A by –2. B. Multiply equation B by 2. C. Multiply equation A by 3. D. Multiply equation B by 3.

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  1. Spring98
    • one year ago
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    @abswag13

  2. Spring98
    • one year ago
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    @amistre64

  3. amistre64
    • one year ago
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    well, how would you attempt to go about it?

  4. Spring98
    • one year ago
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    I'm not sure what the answer is. Or how to find out how to get the answer.

  5. amistre64
    • one year ago
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    im not sure what they call the method in your material, it was called "elimination" when i took the class many moons ago .. study up on it and tell me what you get from it

  6. amistre64
    • one year ago
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    ive heard it call "addition" method before ..

  7. OregonDuck
    • one year ago
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    its A by -3 because you are subtracting the 2x and the 3z; which equals 1 i think

  8. amistre64
    • one year ago
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    The key to learning, and studying, is to allow the asker to put some thought and research into the problem. And not by just doing all the work and thinking for them. This is why we do not allow for direct answers, and requires the askers participation in the solution process. We are not an answering service.

  9. Spring98
    • one year ago
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    there is no -3!

  10. OregonDuck
    • one year ago
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    yes there is choice d

  11. OregonDuck
    • one year ago
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    oh nevermind

  12. amistre64
    • one year ago
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    multiplying eqution A by -3, would eliminate (hence the name elimination method) the x variables when added (hence the name addition method), we want to eliminate the z

  13. Spring98
    • one year ago
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    i know! But some people give out direct answers! and did i ask for an answer? No! I asked for help! help is nothing like giving answers.

  14. Spring98
    • one year ago
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    its not -3 its just plain 3.

  15. amistre64
    • one year ago
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    I was responding to the direct answer that was given :)

  16. Spring98
    • one year ago
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    are you sure its D?

  17. amistre64
    • one year ago
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    what do you understand from your course material, as to this elimination method? This question is simply asking you to apply a part of it. If you have some thought about it (right or wrong) we can correct if need be.

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