math

Hi! I am new to Jishka and I need help checking my answers.

1. Which proportion can be used to determine what number is 15% of 30?
A. 15/30 = x/100 (Mine)
B. 15/100 = x/30
C. 15/100 30/x
D. 30/100 = 15/x

2. Which equation can be used to determine what number, n, is 40% of 64?
A. (40)(64)= N
B. 40 (divided)64= N (mine)
C. 0.40 (64) = N
D. 64n = 40

3. What number is 75% of 300?
A. 36
B. 22.5
C. 2250
D. 225 (mine)

4. 28% of 80 is what number?
A. 22.4 (mine)
B. 2.24
C. 224
D. 24.4

5. Which equation would provide the best estimate of 32% of 44.7?
A. 1/3 x 40 = n
B. 2/3 x 45 = n
C. 1/3 x 45 = n (mine)
D. 2/3 x 44 = n

Thank you!

  1. 👍 5
  2. 👎 1
  3. 👁 3,336
  1. 3, 4, and 5 are right.

    The first two are wrong.

    1. 👍 3
    2. 👎 1
    👩‍🏫
    Ms. Sue
  2. Two is C. You can multiply any number by the decimal equivalent of the percentage you are interested in (i.e. 40% if 50 is 0.4 * 50)

    First one has me confused. Are they typed in correctly? 15% of 30 is 4.5

    A. 15/30 = x/100
    15/30 = 0.5, .5/100 = 0.005 Wrong

    B. 15/100 = x/30
    15/100 = 0.15, 0.15/30 = 0.005 Wrong

    C. 15/100 30/x
    15/100 = 0.15, 30/.15 = 200 Wrong

    D. 30/100 = 15/x
    30/100 = 0.3, 15 / 0.3 = 50 Wrong

    1. 👍 0
    2. 👎 1
  3. I just did the test number one Is b I got it wrong when I said it was one and it was b. :)

    1. 👍 0
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  4. I Got 5/5 :)

    1.B
    2.C
    3.D
    4.A
    5.C

    For kids in the future

    1. 👍 75
    2. 👎 1
  5. YAY I GOT 5/5 TOO THX! SID.V

    1. 👍 4
    2. 👎 0
  6. Ya Sid. V is right I got 100% as well

    1. 👍 4
    2. 👎 0
  7. Jishka is and it I would have gotten 100% but I listen to the website and got 60% instead hate jishka.

    1. 👍 1
    2. 👎 17
  8. Yo +jake @jake bruh i got a 5/5 wat u talkin about.

    1. 👍 10
    2. 👎 0
  9. Wow thank god for jishka!

    1. 👍 8
    2. 👎 0
  10. B,C,D,A,C

    1. 👍 1
    2. 👎 0
  11. I GOT 100%
    I NORMALLY GET 3/5 OR 2/5 OR 1/5
    THX SO MMMMMUUUUUUUUUUUUUUUCCCCCCCHHHHH

    1. 👍 5
    2. 👎 0
  12. THANK YOU SO MUCH YOUR A LIFE SAVER!

    1. 👍 3
    2. 👎 0
  13. sid.v is right

    1. 👍 2
    2. 👎 0
  14. Use Sid.V's answers he's right.

    1. 👍 2
    2. 👎 0
  15. Thanks

    1. 👍 1
    2. 👎 0
  16. Sid is right, the answers are:
    1.B
    2.C
    3.D
    4.A
    5.C

    1. 👍 2
    2. 👎 0
  17. I got 4/5!

    Here!
    1.B
    2.C
    3.D
    4.A
    5.C

    1. 👍 1
    2. 👎 0
  18. i had got a 5/5 do what lesson ans unit are are in?

    1. 👍 0
    2. 👎 0
  19. cool

    1. 👍 0
    2. 👎 0
  20. Nobody cares lindsey, sid posted the answers first.

    1. 👍 2
    2. 👎 1
  21. Tysm Sid.V!

    1. 👍 0
    2. 👎 0
  22. SID IS RIGHT GUYS

    1. 👍 0
    2. 👎 0
  23. Jake idk what you are talking about I got a 5/5

    1. 👍 1
    2. 👎 0
  24. Awesome!! Sid.V is Correct, Well and Linsey but Sic posted first

    1. 👍 0
    2. 👎 0
  25. I mean Sid. V

    1. 👍 0
    2. 👎 0
  26. Wow Thanks Sid.V! Brainly and Jiskha are the best! :)

    1. 👍 2
    2. 👎 0
  27. Why did I get 2/5 with Sid.Vs answers? Can someone explain..

    1. 👍 1
    2. 👎 0
  28. Thank you!!! 5/5

    1. 👍 1
    2. 👎 0
  29. Sid thank you so much!!!! I got an A

    1. 👍 1
    2. 👎 0
  30. Sid.V this is a website of helping not giving away answers!

    1. 👍 0
    2. 👎 2
  31. sid is so right 100% posotive

    1. 👍 0
    2. 👎 0
  32. SID is right!!!!!

    1. 👍 0
    2. 👎 0
  33. Sid is correct

    1. 👍 0
    2. 👎 0
  34. YAS Queen

    1. 👍 0
    2. 👎 0
  35. Still works

    1. 👍 0
    2. 👎 0

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