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katlin95

  • one year ago

Which of the following is equivalent to the proportion 2/3=3/y? A. 3y = (2)(3) B. 2y = (2)(3) C. 2y = (3)(3) D. 3y = (3)(3)

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  1. katlin95
    • one year ago
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    @jim_thompson5910 i stuck

  2. JayDS
    • one year ago
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    Hint: You can cross multiply here.

  3. jim_thompson5910
    • one year ago
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    when you cross multiply 2/3=3/y what do you get?

  4. katlin95
    • one year ago
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    no solution

  5. jim_thompson5910
    • one year ago
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    a/b = c/d cross multiplies to a*d = b*c

  6. katlin95
    • one year ago
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    y =9/2

  7. jim_thompson5910
    • one year ago
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    dont' completely solve for y though

  8. jim_thompson5910
    • one year ago
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    just do this first step of cross multiplication

  9. katlin95
    • one year ago
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    2y=9

  10. jim_thompson5910
    • one year ago
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    better, but that 9 can be written as what

  11. katlin95
    • one year ago
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    9x

  12. jim_thompson5910
    • one year ago
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    9 = 9*1 9 = something * something what goes in the place of "something" ?

  13. katlin95
    • one year ago
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    2y= (3)(3)

  14. jim_thompson5910
    • one year ago
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    you got it

  15. katlin95
    • one year ago
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    Which of the following is equivalent to the proportion 3/4=x/12

  16. jim_thompson5910
    • one year ago
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    I'm assuming there are choices post them please and tell me which one you got

  17. katlin95
    • one year ago
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    A. 4/3= 12/x B. 3/4= 12/x C. 4/3= x/12 D. 4/12= x/3

  18. jim_thompson5910
    • one year ago
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    which one did you get

  19. jim_thompson5910
    • one year ago
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    hint: if a/b = c/d then you can flip both sides to get the equivalent equation b/a = d/c

  20. katlin95
    • one year ago
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    A right?

  21. jim_thompson5910
    • one year ago
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    good, you got it

  22. katlin95
    • one year ago
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    What is the first step that you have to do in order to solve the proportion: 1/3=y/26 A. 8.5 B. 26y = 3 C. y = 3(26) D. 3(y) = 1(26) I got B!:)

  23. jim_thompson5910
    • one year ago
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    B is incorrect

  24. jim_thompson5910
    • one year ago
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    a/b = c/d cross multiplies to a*d = b*c

  25. katlin95
    • one year ago
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    1/3=y/26 26=3y

  26. jim_thompson5910
    • one year ago
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    good, you got it, so that's close to 3(y) = 1(26) you just have to factor and flip the equation

  27. katlin95
    • one year ago
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    so our answer would be D then

  28. jim_thompson5910
    • one year ago
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    correct

  29. katlin95
    • one year ago
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    When movies are being created, the set designers often use miniature models before they create the actual movie set. The set designers for Jurassic Park 3, created a 6 inch high and 4 inch long model dinosaur that represented a 20 feet high dinosaur on the set. How long was the actual dinosaur, rounded to the nearest foot? A. 15 feet B. 13 feet C. 14 feet D. 12 feet

  30. katlin95
    • one year ago
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    I think its B

  31. jim_thompson5910
    • one year ago
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    solve for x 6/20 = 4/x

  32. katlin95
    • one year ago
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    x=40/3

  33. katlin95
    • one year ago
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    ?

  34. jim_thompson5910
    • one year ago
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    which is x = 13.333 in decimal form round this to the nearest whole number to get x = 13

  35. katlin95
    • one year ago
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    so our answer is 13

  36. jim_thompson5910
    • one year ago
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    you got it

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