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mikaa_toxica13 Group Title

*help requested* *fan and medal awarded* Solve for x: 2x - 2 > 4x + 6 x < -4 x > -4 x < 4 x > 4 Simplify the following expression. 5x - 6y + 5z - x - 12y + 2z 6x - 18y + 7z 4x - 18y + 7z 4x - 6y + 7z 6x - 6y + 7z 6 + x + y = x + 6 + y is an example of which algebraic property? Distributive Property Associative Property of Addition Commutative Property of Addition Symmetric Property

  • one year ago
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  1. mikaa_toxica13 Group Title
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    i thinks its a d b

    • one year ago
  2. mathstudent55 Group Title
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    Let's wotk on the first one. 2x - 2 > 4x + 6 You work on a inequality like you work on an equation with one exception. Just as with an equation, you can add the same number to both sides or subtract the same number from both sides. You can also multiply both sides or divide both sides by the same _positive_ number. The difference between an inequality and an equation is that when you multiply or divide both sides of an inequality by a _negative_ number, the inequality sign changes direction.

    • one year ago
  3. mathstudent55 Group Title
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    To start solving this inequality, let's add 2 to both sides 2x - 2 > 4x + 6 +2 +2 -------------- 2x > 4x + 8 Do you follow so far?

    • one year ago
  4. mikaa_toxica13 Group Title
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    yes

    • one year ago
  5. mathstudent55 Group Title
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    Now we have 2x > 4x + 8 Now we need to get all terms with x to teh left side, so we'll subtract 4x from both sides 2x > 4x + 8 -4x -4x ----------- -2x > 8 Now we need to divide both sides by -2. here's where you need to be careful with an inequality because when you divide both sides of an inequality by a negative number, the inequality sign changes direction. -2x 8 --- < --- -2 -2 x < -4 That's the answer

    • one year ago
  6. Solmyr Group Title
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    #2 5x - 6y + 5z - x - 12y + 2z first thing u do is add or subtract all the x,y,and z's 5x - 6y + 5z - x - 12y + 2z +x +12 -2 +x +12 -2

    • one year ago
  7. mathstudent55 Group Title
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    Answer is a, which is what you got. Good job!

    • one year ago
  8. mikaa_toxica13 Group Title
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    okay so for number 2

    • one year ago
  9. mathstudent55 Group Title
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    In the second question, you need to combine like terms. Like terms have the same variable part. 5x - 6y + 5z - x - 12y + 2z 5x - x - 6y - 12y + 5z + 2z 4x - 18y + 7z Here the answer is b

    • one year ago
  10. mikaa_toxica13 Group Title
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    okay thanks i was a lil confused on that one. okay and for number 3 i pretty much guessed

    • one year ago
  11. mathstudent55 Group Title
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    The last question deals with a property. The commutative property of additon is: a + b = b + a That means you can change the order of an addition. That's what is happening in this question. 6 + x + y = x + 6 + y The only thing that changed from the left side to the right side is 6 + x became x + 6

    • one year ago
  12. mikaa_toxica13 Group Title
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    oh so i was right ?

    • one year ago
  13. mathstudent55 Group Title
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    Commutative is c. You had d.

    • one year ago
  14. mikaa_toxica13 Group Title
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    oh sorry i meant to say c. my baaad

    • one year ago
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