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anonymous

  • one year ago

FAN AND MEDAL!! Find the value of x so that the rectangles have the same area.

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  1. anonymous
    • one year ago
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    |dw:1442538186565:dw|

  2. anonymous
    • one year ago
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    @Hero , @Here_to_Help15 , @nincompoop , @satellite73 , @Tazmaniadevil

  3. anonymous
    • one year ago
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    @Astrophysics

  4. anonymous
    • one year ago
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    @dm91

  5. anonymous
    • one year ago
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    anybody there

  6. sidmanfu
    • one year ago
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    Ill ask someone that I know to help you ;)

  7. anonymous
    • one year ago
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    ok

  8. anonymous
    • one year ago
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    @mathmate , @Hero , @HaileyD

  9. anonymous
    • one year ago
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    @emily_wilson

  10. sidmanfu
    • one year ago
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    ;)

  11. anonymous
    • one year ago
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    i tried but its so confusing i dunno where to start

  12. mathmate
    • one year ago
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    Hint: start with Area = length * width. |dw:1442539241188:dw|

  13. anonymous
    • one year ago
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    i still dont understand

  14. mathmate
    • one year ago
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    If the rectangles have the same area, then L1*W1=L2*W2 Substitute the numbers from the figure and solve for x.

  15. anonymous
    • one year ago
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    ok and how do i solve for x

  16. anonymous
    • one year ago
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    @dan815

  17. anonymous
    • one year ago
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    anybody there

  18. anonymous
    • one year ago
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    @mathmate where did u go

  19. sidmanfu
    • one year ago
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    hes still there lol XD

  20. anonymous
    • one year ago
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    it seems like hes frozen

  21. anonymous
    • one year ago
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    anybody help

  22. dm91
    • one year ago
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    ok sorry went offline for a bit what do you need help with?

  23. mathmate
    • one year ago
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    I suggest you formulate the equation before trying to solve it. So could you substitute values L1, W1, L2, W2 and form an equation?

  24. anonymous
    • one year ago
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    how do u do that

  25. dm91
    • one year ago
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    or L*W*H

  26. mathmate
    • one year ago
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    There is no height, so L1*W1=L2*W2, we're calculating areas.

  27. anonymous
    • one year ago
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    ok?

  28. mathmate
    • one year ago
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    So can you formulate the equation? The values to be substituted is in the diagram.

  29. mathmate
    • one year ago
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    *are

  30. anonymous
    • one year ago
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    i know but what do i substitute with

  31. Jhannybean
    • one year ago
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    \[L_1=~? \\ L_2=~? \\ W_1=~? \\ W_2=~? \\\]

  32. Jhannybean
    • one year ago
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    Find those, then use this formula he gave you. \(\color{#0cbb34}{\text{Originally Posted by}}\) @mathmate There is no height, so \(\color{red}{L1*W1=L2*W2}\) , we're calculating areas. \(\color{#0cbb34}{\text{End of Quote}}\)

  33. anonymous
    • one year ago
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    ok

  34. anonymous
    • one year ago
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    @@phi

  35. anonymous
    • one year ago
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    @phi

  36. anonymous
    • one year ago
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    im really confused this is is not going to get me anywhere. how do we do that?

  37. dm91
    • one year ago
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    i ahve one person that can explain it better @steve816

  38. phi
    • one year ago
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    How far did you get ?

  39. dan815
    • one year ago
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    |dw:1442540874878:dw|

  40. anonymous
    • one year ago
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    i didnt know where to start i was completely confused

  41. dan815
    • one year ago
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    start with that

  42. phi
    • one year ago
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    Do you understand area is length times width ?

  43. anonymous
    • one year ago
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    yes

  44. phi
    • one year ago
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    do you know the width and length of your first rectangle (on the left side) ?

  45. anonymous
    • one year ago
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    yes w=9, l=x-4

  46. phi
    • one year ago
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    ok. now multiply them to get area to multiply put parens around (x-4) and just write it as 9(x-4) that is algebra short-hand for 9 times (x-4) ok so far?

  47. anonymous
    • one year ago
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    YES! I THINK I GET IT! Just wait so that I can solve it.

  48. phi
    • one year ago
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    can you do the same thing for the other triangle ?

  49. anonymous
    • one year ago
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    u mean rectangle

  50. phi
    • one year ago
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    oops, yes rectangle

  51. anonymous
    • one year ago
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    ok ill try just wait but pls dont leave

  52. anonymous
    • one year ago
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    is x=25??

  53. anonymous
    • one year ago
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    @phi am i right

  54. anonymous
    • one year ago
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    im sorry for being late i was confused again at first

  55. anonymous
    • one year ago
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    @phi are u even there

  56. anonymous
    • one year ago
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    ok i believe thats right because both rectangles have the same area with that value

  57. phi
    • one year ago
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    yes x=25 how did you get it ?

  58. anonymous
    • one year ago
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    i first used the distributive property to simplify, then used inverse subtraction, then inverse addition, then inverse division and then TADAA! I got my answer! YAY!

  59. anonymous
    • one year ago
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    thanks for all the help @phi and @mathmate

  60. phi
    • one year ago
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    yw

  61. anonymous
    • one year ago
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    u guys r the best

  62. anonymous
    • one year ago
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    bye

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