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ilovenyc

  • 3 years ago

Choose the correct description of the graph of the inequality -x > 3. A Open circle on -3, shading to the left. B Closed circle on 3, shading to the left. C Open circle on 3, shading to the right. D Closed circle on -3, shading to the right.

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  1. Brittni0605
    • 3 years ago
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    |dw:1357079178556:dw|

  2. ilovenyc
    • 3 years ago
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    @Brittni0605 so it would be A?

  3. Brittni0605
    • 3 years ago
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    Yes

  4. mathstudent55
    • 3 years ago
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    -x > 3 You want x but you have -x, so you need to multiply both sides by -1. You must be careful with an inequality bec when you multiply or divide both sides by a negative number, the direction of the inequality sign changes.

  5. mathstudent55
    • 3 years ago
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    |dw:1357079662466:dw|

  6. Brittni0605
    • 3 years ago
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    @mathstudent55 is giving the explanation if you don't understand what I did.

  7. ilovenyc
    • 3 years ago
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    thank you both! @Brittni0605 and @mathstudent55 any chance one of you could help me with another?

  8. mathstudent55
    • 3 years ago
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    Sure post a new post pls

  9. Brittni0605
    • 3 years ago
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    Sure.

  10. ilovenyc
    • 3 years ago
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    @Brittni0605 Choose the correct description of the graph of the inequality x - 8 < 5x. A Open circle on -2, shading to the left. B Closed circle on -2, shading to the left. C Open circle on -2, shading to the right. D Closed circle on -2, shading to the right. My answer is C am I correct?

  11. Brittni0605
    • 3 years ago
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    Yes.

  12. ilovenyc
    • 3 years ago
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    @Brittni0605 Choose the correct description of the graph of the inequality -5x greater than or equal to 25. Open circle on -5, shading to the left. Closed circle on -5, shading to the left. Open circle on 5, shading to the right. Closed circle on 5, shading to the right.

  13. Brittni0605
    • 3 years ago
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    |dw:1357083381881:dw|

  14. ilovenyc
    • 3 years ago
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    @Brittni0605 so it would be B?

  15. Brittni0605
    • 3 years ago
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    Yes.

  16. ilovenyc
    • 3 years ago
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    @Brittni0605 thanks here is another one: Solve the inequality 4x - 16 > 6x - 20. x < 7 x < 2 x > 7 x > 2

  17. ilovenyc
    • 3 years ago
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    @Brittni0605 would the answer be B?

  18. mathstudent55
    • 3 years ago
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    |dw:1357084097014:dw|

  19. mathstudent55
    • 3 years ago
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    B is correct

  20. ilovenyc
    • 3 years ago
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    @mathstudent55 thank you :)

  21. mathstudent55
    • 3 years ago
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    wlcm

  22. ilovenyc
    • 3 years ago
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    @mathstudent55 , @Brittni0605 maybe you both could help me with this: Which of the following is not a way to represent the solution of the inequality 2(x + 1) greater than or equal to 20? A x _>__9 B 9 _<__ x C A number line with a closed circle on 9 and shading to the left. D A number line with a closed circle on 9 and shading to the right.

  23. Brittni0605
    • 3 years ago
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    I apologize, I have to sign off. @mathstudent55 is doing a fine job of helping you.

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