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Unofficialllyy

  • one year ago

Barry is trying to calculate the distance between point E(3, 1) and point F(4, 7). Which of the following expressions will he use?

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  1. Unofficialllyy
    • one year ago
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    My answer choices are: A. \[\sqrt{(7-1)^2+(4-3)^2}\] B. \[\sqrt{(7-3)^2+(4-1)^2}\] C. \[\sqrt{(7-4)^2+(3-1)^2}\] D. \[\sqrt{(4-7)^2+(1-3)^2}\]

  2. Unofficialllyy
    • one year ago
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    But I did it myself and I got \[\sqrt{(4-3)^2+(7-1)^2}\]

  3. anonymous
    • one year ago
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    |dw:1432913970733:dw|

  4. Unofficialllyy
    • one year ago
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    I don't need to solve it.

  5. Unofficialllyy
    • one year ago
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    I need to find out which expression he will use to find the distance between (3,1) and (4,7)

  6. Unofficialllyy
    • one year ago
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    I'm pretty sure my answer is right, but it isn't one of the answer choices.

  7. anonymous
    • one year ago
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    Ah that depends on which you chose as X1, Y1 and X2, Y2

  8. anonymous
    • one year ago
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    try it in reverse. i.e. chose 4, 7 as X1, Y1, and 3,1 as X2 , Y2

  9. Unofficialllyy
    • one year ago
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    I did, there is no answer choice that starts with 1

  10. anonymous
    • one year ago
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    Your right the only options for X2 are 3 or 4, and since the distance formula starts with (x2 -x1) then none of the above qualify!

  11. anonymous
    • one year ago
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    except maybe d?

  12. Unofficialllyy
    • one year ago
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    I don't have a none of the above option though :(

  13. Unofficialllyy
    • one year ago
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    Yeah maybe. I'll try it. Thanks for helping!

  14. anonymous
    • one year ago
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    |dw:1432914891064:dw|

  15. anonymous
    • one year ago
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    no, no matter which point you make as X1, y1 and x2, y2, none of the above are an option

  16. Unofficialllyy
    • one year ago
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    Yeah so i'm confused on what to choose

  17. anonymous
    • one year ago
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    sometimes, textbooks get it wrong, just take down both solutions that I have given and hand to your teacher

  18. Unofficialllyy
    • one year ago
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    I will. Thank you!

  19. anonymous
    • one year ago
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    you're very welcome!

  20. anonymous
    • one year ago
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    There is a good lesson in this, you done everything right, and if at the end of the day, you have done things right and the answer still doesnt come out, then you have to have confidence in what you do.

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