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anonymous

  • one year ago

Points R, S and T lie on a number line, where S is between R and T. The distance between R and S is 6, and the distance between R and T is 15. Quantity A: The distance between the midpoints of line segments RS and ST Quantity B: The distance between S and T

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  1. anonymous
    • one year ago
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    Which is greater or are they equal

  2. geerky42
    • one year ago
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    Let's just draw number line:|dw:1436910305137:dw| Since they didn't say about about the value of R, S, and T, we can just assume that R = 0. So S would be 6, and T would be 15.

  3. anonymous
    • one year ago
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    S to T is 9

  4. geerky42
    • one year ago
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    |dw:1436910500510:dw|

  5. geerky42
    • one year ago
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    Yeah that's right.

  6. geerky42
    • one year ago
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    Do you know anything about Quantity A?

  7. anonymous
    • one year ago
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    no

  8. anonymous
    • one year ago
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    thats what i dont get

  9. geerky42
    • one year ago
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    "midpoints" is basically point that lie exactly in middle. So midpoint of RS is 3, because R is 0 and S is 6 \(\dfrac{0+6}2=3\) Another way to see is that distance between R and S is 6, so half of that is 3.

  10. geerky42
    • one year ago
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    Does that make sense? What is midpoint of ST?

  11. anonymous
    • one year ago
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    im trying to process it and no im having a hard time understanding

  12. anonymous
    • one year ago
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    OHHHHHHHHHHHH wait i got it so basically a MIDPOINT is just the middle....

  13. geerky42
    • one year ago
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    |dw:1436910792279:dw|

  14. geerky42
    • one year ago
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    Yep

  15. anonymous
    • one year ago
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    ohhhh okay i got it now thank you <3

  16. geerky42
    • one year ago
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    No problem. So can you figure out the answer now?

  17. anonymous
    • one year ago
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    yes

  18. geerky42
    • one year ago
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    okay cool.

  19. phi
    • one year ago
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    Hopefully you found the answer to part A |dw:1436912651346:dw| the distance between the midpoints is the distance from A to B 3+4.5 = 7.5

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