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ineedyouubiebs Group Title

I know this is not math but whatever. If the mass is 1.16 and the volume is 8.5 what is the slope?

  • one year ago
  • one year ago

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  1. ineedyouubiebs Group Title
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    In my HW it says to find the slope it's (change in mass)/(change in volume)

    • one year ago
  2. ineedyouubiebs Group Title
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    @Luigi0210 help please?

    • one year ago
  3. Luigi0210 Group Title
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    Do you know the changes?

    • one year ago
  4. ineedyouubiebs Group Title
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    What do you mean by that?

    • one year ago
  5. Luigi0210 Group Title
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    Do you only have one set of values?

    • one year ago
  6. ineedyouubiebs Group Title
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    Oh no there's more. Want me to put them up?

    • one year ago
  7. ineedyouubiebs Group Title
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    Label 1) mass: 1.16 g volume:8.5 . Label 2) mass:0.98 volume: 7.2. Label 3) mass: 1.13 volume:10.0 . Label 4) mass: 0.69 volume: 6.2. Label 5) mass: 0.83 volume:6.0. Label 6) mass:1.45 volume: 12.9. Label 7) mass: 0.88 volume: 7.9. Label 8) mass: 1.03 volume: 7.5. Label 9) mass: 0.74 volume: 5.4. Label 10) mass: 1.02 volume: 7.5

    • one year ago
  8. ineedyouubiebs Group Title
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    Sorry I couldn't lined them up well I'm on my iPad right now

    • one year ago
  9. Luigi0210 Group Title
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    Uhm

    • one year ago
  10. ineedyouubiebs Group Title
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    Yeah?

    • one year ago
  11. Luigi0210 Group Title
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    I got nothing, sorry

    • one year ago
  12. kantalope Group Title
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    what happens if you treat the mass as the x coordinate and the volume as the y coordinate?

    • one year ago
  13. ineedyouubiebs Group Title
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    But that'll mean graphing all 10 of them

    • one year ago
  14. kantalope Group Title
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    ya working on ti

    • one year ago
  15. ineedyouubiebs Group Title
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    @dumbcow @dan815 got any ideas how to do this?

    • one year ago
  16. ineedyouubiebs Group Title
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    @Luigi0210 don't worry(:

    • one year ago
  17. ineedyouubiebs Group Title
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    @zepdrix ?

    • one year ago
  18. kantalope Group Title
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    tryin to find a website the will plot all the points

    • one year ago
  19. ineedyouubiebs Group Title
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    Okay thanks

    • one year ago
  20. zepdrix Group Title
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    kant, use this site, it's quite good :) https://www.desmos.com/calculator

    • one year ago
  21. kantalope Group Title
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    looks like the slopes are about the same for a series of points...not sure what the question is looking for

    • one year ago
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  22. kantalope Group Title
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    thanks zepdrix i'll check that site too...the one i found called http://openstudy.com/study#

    • one year ago
  23. kantalope Group Title
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    I'm missing clone wars for this!

    • one year ago
  24. ineedyouubiebs Group Title
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    @kantalope lol my bad and how does this help me find what I'm looking for?

    • one year ago
  25. kantalope Group Title
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    typically when you are looking for slope you are looking for the change in whatever based on the change in the other thing.....these changes aren't a straight line. what else does the question have?

    • one year ago
  26. ⒶArchie☁✪ Group Title
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    it is a bit confusing that a slope can be asked when mass and volume are given. However, if the slope is meant to mean density, then I will say the slope= mass/volume.

    • one year ago
  27. kantalope Group Title
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    if the data has a function we can find the variable slope based on the derivative of the function

    • one year ago
  28. kantalope Group Title
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    heh - I'll bet I'm supposed to be able to figure out this kind of problem at the end of the semester not the beginning...and the martini I just finished in not helping...

    • one year ago
  29. kantalope Group Title
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    I'm rearranging the data on the graph...

    • one year ago
  30. ineedyouubiebs Group Title
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    http://mcpchemistry1.wikispaces.com/file/view/HW4%20-%20Density%20Graph%20Practice%202013-14.doc/447730728/HW4%20-%20Density%20Graph%20Practice%202013-14.doc here is my HW, the question is on the last page

    • one year ago
  31. kantalope Group Title
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    The points are all squirrely so a serious person would do some stat regression to find the mean

    • one year ago
  32. kantalope Group Title
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    Ah ha...which is exactly what the graph was finding

    • one year ago
  33. ineedyouubiebs Group Title
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    I think your looking at the wrong page, it's the very last one

    • one year ago
  34. kantalope Group Title
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    right so my pictures were plots of the data that we were given...it is all wonky

    • one year ago
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  35. kantalope Group Title
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    If we were measuring stuff that had a consistent mass to volume ratio the line would be nice and straight....the more stuff we had the more it would weigh yea?

    • one year ago
  36. ineedyouubiebs Group Title
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    Yeah it is all "wonky" ughhh this is irritating

    • one year ago
  37. kantalope Group Title
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    that's ok that is how real data works

    • one year ago
  38. ineedyouubiebs Group Title
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    Yeah, I know what your saying

    • one year ago
  39. ineedyouubiebs Group Title
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    You sure I'm not just suppose to divide or subtract?

    • one year ago
  40. kantalope Group Title
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    so our data is sloppy could mean a couple of things like the hint suggests - maybe some of the chunks we are looking at are real rocks and some are plastic fake rocks

    • one year ago
  41. ineedyouubiebs Group Title
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    Their metals

    • one year ago
  42. kantalope Group Title
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    nah if you were serious about this data you would plot it out like we did and look if it was in straight lines...if it was not you would do a process called regression to find the average slope between the plot points

    • one year ago
  43. kantalope Group Title
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    right so some of metal is real and some of it isn't or some of the metal is a different kind or you could just be kinda sloppy in measuring the volume or the mass...rounding up sometimes and rounding down others or if you have different people doing the measuring the data will get screwy

    • one year ago
  44. ineedyouubiebs Group Title
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    Becauseatfirst I taught I was only suppose to divide and ill get the answer, but apparerently not

    • one year ago
  45. kantalope Group Title
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    So for the last page you can paste in the plots in the pictures and a hypothesis is that the measurements are not consistent and that there seems to be two different trend lines in the data so there are probably two different kinds of metal in the sample with two densities regression wiki: http://en.wikipedia.org/wiki/Least_squares

    • one year ago
  46. kantalope Group Title
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    If you did just divide each set of points to get a series of numbers....I'll bet you get two sets of answers...lemme check that

    • one year ago
  47. ineedyouubiebs Group Title
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    Okay(:

    • one year ago
  48. kantalope Group Title
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    actually turns out that there are more like 3 sets of ratios - .14 is the answer to 3 samples .111 to three and .138 to three more <-- this also points to something funny with the data if the ration of volume to mass was the same all the samples would have basically the same well ratio ya ----so just dividing would show something but the graph makes it easier to see

    • one year ago
  49. mary.rojas Group Title
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    Can you explain in a different way, she cant understand

    • one year ago
  50. kantalope Group Title
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    If the samples were consistent - all made of the same stuff - if you had more stuff it would weigh more....a big gold coin has more mass (weighs more) than a small gold coin...and that change in size and mass would be consistent. A coin that is twice as big would weigh twice as much....does that make sense?

    • one year ago
  51. ineedyouubiebs Group Title
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    Yes, I do understand that thAt was one of the questions lol

    • one year ago
  52. kantalope Group Title
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    so if i started handing you coins that were twice as big but didn't weigh twice as much ...you would say "dood, you are rippin me off, these are not gold coins" that is what the first graph is showing ....there are four coins in the top line with a certain volume to weight ratio (slope) and then 6 coins in another line with a different volume to weight ratio(slope)

    • one year ago
  53. ineedyouubiebs Group Title
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    Somehow I think I'm just suppose to divide, and I'm just complicating myself!

    • one year ago
  54. kantalope Group Title
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    well number 2 on the second to last page says graph it....so there is that

    • one year ago
  55. ineedyouubiebs Group Title
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    Yeah and I already graphed it

    • one year ago
  56. kantalope Group Title
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    and the graph show some dots that make a line and some other dots that make a different line?

    • one year ago
  57. ineedyouubiebs Group Title
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    Yeah they do

    • one year ago
  58. kantalope Group Title
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    so the last question says to calculate the slope of each of those lines m= (y1-y0) / (x1-x0) if you pick any two points on the two lines you can get the slope

    • one year ago
  59. ineedyouubiebs Group Title
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    Can you do the first one as an example? Please

    • one year ago
  60. kantalope Group Title
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    ok top line the first point is (.69, 6.2) and another point on that line looks like (1.45, 12.9) would you agree?

    • one year ago
  61. kantalope Group Title
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    y1= 12.9 y0 = 6.2 x1= 1.45 x0 = .69 6.7/.76 = 8.82

    • one year ago
  62. ineedyouubiebs Group Title
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    No it's suppose to be 1.16 and 8.5

    • one year ago
  63. kantalope Group Title
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    the points on the other line are (0.74,5.4), ( 0.83,6.0), ( 0.98, 7.2), ( 1.02 ,7.5), ( 1.03, 7.5), (1.16,8.5) you can use any of those points to calculate the slope of the second line

    • one year ago
  64. kantalope Group Title
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    I started with the top line....that point is on the lower line...you can go with whatever one first

    • one year ago
  65. ineedyouubiebs Group Title
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    So I'll divide it like 1.16/8.5 correct?

    • one year ago
  66. kantalope Group Title
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    not if you want to calculate the slope like the last question asks...dividing will just get you the ratio not the slope...

    • one year ago
  67. kantalope Group Title
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    I made the graph bigger so it is easier to see the two different lines....we are looking for the slope of those two lines I think that the instructions are confusing as they ask for the change in mass over the change in volume....simply dividing is not the change....it is just the mass over the volume...in order to get the change part you have to do the y1-y0 thing

    • one year ago
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  68. kantalope Group Title
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    I hope that means you are going ...ah, I get it rather than ah @$%$ it =)

    • one year ago
  69. ineedyouubiebs Group Title
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    Ahhhh crap? Lol I think I'm complicating it more that I should that's why , but that's all

    • one year ago
  70. kantalope Group Title
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    k gl im out its really late here

    • one year ago
  71. ineedyouubiebs Group Title
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    Yeah get some sleep goodnight

    • one year ago
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