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kaiteDID

  • 3 years ago

Solve the following equation. Then place the correct number in the box provided. |3- x | = 8 x = or x =

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  1. geoffb
    • 3 years ago
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    Implicit in the way they ask you to put your answer, you know there will be two solutions. Do you know what the vertical bars ( | ) stand for?

  2. kaiteDID
    • 3 years ago
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    no i dont

  3. mtmb11
    • 3 years ago
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    11 and -5 i think

  4. geoffb
    • 3 years ago
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    The vertical bars mean absolute value. When you're evaluating the expression, positive is positive and negative is positive. So, if I want to know |x|, then answer is 10 if x is 10 *or* -10.

  5. tcarroll010
    • 3 years ago
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    In |x| = A, you have x= A if x is positive. You have -x = A if x is negative. The second consideration is resolved by a double negative.

  6. mtmb11
    • 3 years ago
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    o well i was wrong

  7. geoffb
    • 3 years ago
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    @mtmb11 No you weren't.

  8. tcarroll010
    • 3 years ago
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    So, if 3-x is positive, you have the equation 3 - x = 8 and then you solve that. If 3-x is negative, you have -(3 - x) = 8 or x - 3 = 8, and then you solve that one. You will have both as answers.

  9. mtmb11
    • 3 years ago
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    yay i was correct

  10. mtmb11
    • 3 years ago
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    how do i make my numbers go up on this account like right now i have 20

  11. tcarroll010
    • 3 years ago
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    So, do you understand now how you have to set up 2 equations? one for the positive and one for the negative.

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