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trwatkins1

  • one year ago

Which expressions represent the distance between the two points? Choose all answers that are correct. The number line shows two points with coordinates negative 11 and positive 7. A. |–11 – 7| B. |–11 + 7| C. |7 – (–11)| D. –11 – 7

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  1. anonymous
    • one year ago
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    What do you think? If you are not sure, you can actually write out a number line mark -11 & 7 and count. But there is a mathematical definition, do you know what it is?

  2. JoannaBlackwelder
    • one year ago
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    Can you draw the number line?

  3. trwatkins1
    • one year ago
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    yea hold on

  4. JoannaBlackwelder
    • one year ago
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    Ok, great! And can you count how many numbers it takes to get from one point to the other?

  5. trwatkins1
    • one year ago
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    nope XD

  6. trwatkins1
    • one year ago
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    jk

  7. JoannaBlackwelder
    • one year ago
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    ha ha ha

  8. trwatkins1
    • one year ago
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    10

  9. trwatkins1
    • one year ago
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    sorry dont know how 2 count

  10. JoannaBlackwelder
    • one year ago
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    It is 11 numbers from -11 to 0.

  11. JoannaBlackwelder
    • one year ago
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    Then 7 more to get to 7

  12. JoannaBlackwelder
    • one year ago
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    What does that get us in total?

  13. trwatkins1
    • one year ago
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    18

  14. JoannaBlackwelder
    • one year ago
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    Good. So now, can you find the value of the options?

  15. trwatkins1
    • one year ago
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    c?

  16. JoannaBlackwelder
    • one year ago
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    Yep, that gets 18. :-) Are there any other options?

  17. trwatkins1
    • one year ago
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    b

  18. JoannaBlackwelder
    • one year ago
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    Hm, can you show me how you simplified b?

  19. trwatkins1
    • one year ago
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    well its does egsactly what we did

  20. JoannaBlackwelder
    • one year ago
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    No, not quite. We simplify inside first. -11+7 is -4

  21. trwatkins1
    • one year ago
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    oh

  22. JoannaBlackwelder
    • one year ago
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    And the absolute value makes it positive, so 4

  23. JoannaBlackwelder
    • one year ago
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    Any other thoughts?

  24. trwatkins1
    • one year ago
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    no

  25. JoannaBlackwelder
    • one year ago
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    What do you get for A when you simplify it?

  26. trwatkins1
    • one year ago
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    im not completely awake btw

  27. JoannaBlackwelder
    • one year ago
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    Ok, no worries :-)

  28. trwatkins1
    • one year ago
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    18?

  29. JoannaBlackwelder
    • one year ago
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    That's what I get. :-) What about D?

  30. trwatkins1
    • one year ago
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    again 18

  31. JoannaBlackwelder
    • one year ago
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    Hm, I don't see an absolute value around that one,

  32. JoannaBlackwelder
    • one year ago
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    so I get -18 for D.

  33. trwatkins1
    • one year ago
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    oh yea for got about the - part XD

  34. JoannaBlackwelder
    • one year ago
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    No worries :-) So, what does that give us for the final answer?

  35. trwatkins1
    • one year ago
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    a&b

  36. trwatkins1
    • one year ago
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    no wait a&c

  37. JoannaBlackwelder
    • one year ago
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    Right :-)

  38. trwatkins1
    • one year ago
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    like i said not awak XD

  39. JoannaBlackwelder
    • one year ago
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    It's all good

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