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anonymous

  • one year ago

What is the value of x in the equation 4x + 8y = 40, when y = 0.8? 4.6 8.4 10 1

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  1. Photon336
    • one year ago
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    you could do this two ways you can solve for x and then plug in y, do you know how to do this?

  2. Photon336
    • one year ago
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    subtract 8y from both sides to get this \[40-8y = 4x\]

  3. Photon336
    • one year ago
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    divide both sides by 4 \[(40-8y)/(4) = x \] this gives you 10-2y = x

  4. Photon336
    • one year ago
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    plug in y = 0.8

  5. Photon336
    • one year ago
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    10-2(8/10) = 8.4 does this make sense? @apalmer004 ?

  6. anonymous
    • one year ago
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    Yes, thank you.

  7. Photon336
    • one year ago
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    excellent, no problem

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