math

can someone answer these ive been stuck on them for almost 2 hours !!!!!

1.which pair of ratio form a proportion? choose all that apply.

A. 1/6, 4/20
B. 7/9, 28/36
C. 14/18, 21/27
D. 30/80, 8/18

2.which pair of ratios does not form a proportion?

A. 3/5, 24/40
B. 30/10, 15/3
C. 9/14, 3/4
D. 7/12, 14/24

3.for which value of m is 4/16=m/24 a proportion?

A. m=6
B. m=8
C. m=12
D. m=14

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  1. (7/9)(4/4) = 28/36
    14/18 (3/2 / 3/2) = 21/27

    The easy way is to use your calculator, for example 14/18 = .777777..... and 21/27 =.77777.....
    but
    30/80 = .375 and 8/18 = .4444...

    2.
    3*6 = 24 but 5*6 = 30 not 40
    30/2 = 15 but 10/5 = 5 not 3
    14/3 no way
    but
    7*2 = 14 and 12*2 = 24 YES

    3.
    16 m = 4*24
    m = 6

    check
    4/16 = 1/4
    6/24 = 1/4 yes

    1. 👍 0
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    posted by Damon
  2. 1. is b and c

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    posted by Julio
  3. 1. b., c.
    2.c
    3.a
    4.d
    5.b

    1. 👍 1
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    posted by Yo tengo
  4. Nice name YO TENGO BUT DO YOU KNOW DA WEY

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  5. Yo Tengo's right! Thanks, dude! :)

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    2. 👎 0
  6. Yes Bradda, Da Wey is dis wey.

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  7. thanks yo tengo

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    2. 👎 0
  8. No problem friend

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  9. Gotta love Flamingo

    1. 👍 0
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    posted by blorp
  10. thanks Yo Tengo

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  11. @Blorp Of course, My good sir. Yo tengo to you. @struggles no problem, just helping out other kids who like to be bad and not learn anything (Im including myself so dont get mad at this comment) :D

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    posted by Yo tengo
  12. Lol pur to fast and got b and d out of order

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    posted by Bro
  13. ok thanks

    1. 👍 0
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    posted by idk

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