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katlin95

  • 2 years 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
    • 2 years ago
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    @jim_thompson5910 i stuck

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

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

  4. katlin95
    • 2 years ago
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    no solution

  5. jim_thompson5910
    • 2 years ago
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    a/b = c/d cross multiplies to a*d = b*c

  6. katlin95
    • 2 years ago
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    y =9/2

  7. jim_thompson5910
    • 2 years ago
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    dont' completely solve for y though

  8. jim_thompson5910
    • 2 years ago
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    just do this first step of cross multiplication

  9. katlin95
    • 2 years ago
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    2y=9

  10. jim_thompson5910
    • 2 years ago
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    better, but that 9 can be written as what

  11. katlin95
    • 2 years ago
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    9x

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

  13. katlin95
    • 2 years ago
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    2y= (3)(3)

  14. jim_thompson5910
    • 2 years ago
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    you got it

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

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

  17. katlin95
    • 2 years 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
    • 2 years ago
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    which one did you get

  19. jim_thompson5910
    • 2 years 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
    • 2 years ago
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    A right?

  21. jim_thompson5910
    • 2 years ago
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    good, you got it

  22. katlin95
    • 2 years 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
    • 2 years ago
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    B is incorrect

  24. jim_thompson5910
    • 2 years ago
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    a/b = c/d cross multiplies to a*d = b*c

  25. katlin95
    • 2 years ago
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    1/3=y/26 26=3y

  26. jim_thompson5910
    • 2 years 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
    • 2 years ago
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    so our answer would be D then

  28. jim_thompson5910
    • 2 years ago
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    correct

  29. katlin95
    • 2 years 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
    • 2 years ago
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    I think its B

  31. jim_thompson5910
    • 2 years ago
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    solve for x 6/20 = 4/x

  32. katlin95
    • 2 years ago
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    x=40/3

  33. katlin95
    • 2 years ago
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    ?

  34. jim_thompson5910
    • 2 years 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
    • 2 years ago
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    so our answer is 13

  36. jim_thompson5910
    • 2 years ago
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    you got it

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