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ccchristian1

  • one year ago

A system of equations is shown below: Equation A: 2c = d − 8 Equation B: c = 3d + 8 Which of the following steps should be performed to eliminate variable d first? Multiply equation B by 2. Multiply equation A by 2. Multiply equation B by 3. Multiply equation A by −3.

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  1. ccchristian1
    • one year ago
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    @geerky42

  2. ccchristian1
    • one year ago
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    @pooja195

  3. jim_thompson5910
    • one year ago
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    Fill in the box \[\Large \boxed{ \ ^ \ } \ d + 3d = 0d\]

  4. ccchristian1
    • one year ago
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    whats the answer

  5. jim_thompson5910
    • one year ago
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    any ideas of what might go in there? something plus 3d gives 0d what is that "something" ?

  6. ccchristian1
    • one year ago
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    b?

  7. jim_thompson5910
    • one year ago
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    b plus 3d = 0d ?

  8. ccchristian1
    • one year ago
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    no the answer

  9. ccchristian1
    • one year ago
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    i thik its b or c

  10. ccchristian1
    • one year ago
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    what dou think?

  11. jim_thompson5910
    • one year ago
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    ok why not try this out fill in the blank \[\Large \underline{ \ \ \ \ \ } + 3 = 0\] what goes in the blank?

  12. ccchristian1
    • one year ago
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    -3

  13. jim_thompson5910
    • one year ago
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    so that applies to the 3d as well

  14. jim_thompson5910
    • one year ago
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    -3d + 3d = 0d

  15. jim_thompson5910
    • one year ago
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    |dw:1434769362551:dw|

  16. ccchristian1
    • one year ago
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    so the answer is D?

  17. jim_thompson5910
    • one year ago
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    |dw:1434769369508:dw|

  18. anonymous
    • one year ago
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    Multiply equation A by −3

  19. jim_thompson5910
    • one year ago
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    how do we turn that "d" in equation A into -3d ?

  20. ccchristian1
    • one year ago
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    thank you.

  21. ccchristian1
    • one year ago
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    i just need the answer

  22. ccchristian1
    • one year ago
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    @geerky42 thats the right answer right?

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