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jameshorton

  • one year ago

Which pair of numbers have a GCF of 3? Choose all answers that are correct. A. 18 and 15 B. 3 and 9 C. 6 and 9 D. 15 and 20

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  1. GenericNoodles
    • one year ago
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    Greatest common factor is the biggest multiple, so what do you think it is?

  2. jameshorton
    • one year ago
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    idk

  3. mathstudent55
    • one year ago
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    Factors of 18: 1, 2, 3, 6, 9, 18 Factors of 15: 1, 2, 5, 15 The greatest factor both 18 and 15 have is 3. Now do the same for the other choices.

  4. mathstudent55
    • one year ago
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    The GCF is the greatest common FACTOR, not multiple.

  5. jameshorton
    • one year ago
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    d

  6. jameshorton
    • one year ago
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    A

  7. GenericNoodles
    • one year ago
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    Oops my bad, his explanation is correct :) make you follow those steps.

  8. jameshorton
    • one year ago
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    so the answer is d,a

  9. jameshorton
    • one year ago
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    wat the third one

  10. jameshorton
    • one year ago
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    wat is the answer

  11. anonymous
    • one year ago
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    Look at B and C, follow the same steps as math explained o:

  12. anonymous
    • one year ago
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    For B; List all of the factors of 15 and 18, and find the largest factor that they both have. For D; Can 15 and 20 both be divisible by 3?

  13. jameshorton
    • one year ago
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    soo wat the answer d,a

  14. mathstudent55
    • one year ago
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    D is not an answer. The GCF of D is 5, not 3.

  15. jameshorton
    • one year ago
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    oh

  16. mathstudent55
    • one year ago
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    A is part of the answer. Now check B. What are the factors of 3 and what are the factors of 9?

  17. jameshorton
    • one year ago
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    b,c

  18. GenericNoodles
    • one year ago
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    We can't give you the answers, just the tools to help you!

  19. jameshorton
    • one year ago
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    ok

  20. mathstudent55
    • one year ago
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    B: Factors of 3: 1, 3 Factors of 9: 1, 3, 9 C: Factors of 6: 1, 2, 3, 6 Factors of 9: 1, 3, 9 Now look above for B and C. What is the largest factor in common for B and for C?

  21. jameshorton
    • one year ago
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    3,6,9,12,15,18

  22. mathstudent55
    • one year ago
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    What is that?

  23. jameshorton
    • one year ago
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    9

  24. mathstudent55
    • one year ago
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    \(\sf Choice ~ B:\) \(\sf Factors ~of ~3: 1, \color{red} 3\) \(\sf Factors ~of ~9: 1, \color{red} {3}, 9\)

  25. GenericNoodles
    • one year ago
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    When you find the greatest common factor for two numbers, you lost the numbers they have in common. For question C, The only factors of 6 is 1, 2, 3, 6 The only factors of 9 is 1, 3, 9 Now they each have two numbers in common. 1, and 3. Now decide which of the factors is larger. That is your greatest common factor.

  26. jameshorton
    • one year ago
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    3

  27. GenericNoodles
    • one year ago
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    Find not lost, open study is glitchy on iPhone

  28. jameshorton
    • one year ago
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    oh

  29. mathstudent55
    • one year ago
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    Yes, you are correct. B and C are answers. Since we already had A, then the answer is A, B, C

  30. GenericNoodles
    • one year ago
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    It's a really easy unit of math once you get the hang of it.

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