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jjircal18

  • 2 years ago

how do i do this problem 7/20 =decimal number?

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  1. pfenn1
    • 2 years ago
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    what is \[\frac{7}{20}=7\div20=?\]

  2. pfenn1
    • 2 years ago
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    Or you could multiply the fraction by 5/5.\[\frac{7}{20} \times \frac55=\frac{35}{100}\]

  3. jjircal18
    • 2 years ago
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    2.86 how did you get the 5/5

  4. beeqay
    • 2 years ago
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    What are you trying to do? Or what does the question ask?

  5. pfenn1
    • 2 years ago
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    I was multiplying the expression by 1. I chose 5/5 because I wanted the denominator to be 100. Because we know what the decimal of 35/100 is......0.35.

  6. jjircal18
    • 2 years ago
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    thanks i was divivding backwards , i havent had math in twenty years studing for placement test

  7. pfenn1
    • 2 years ago
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    Good luck with that. I know how you feel. I haven't taken math in almost 30 years.

  8. jjircal18
    • 2 years ago
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    that is the answer 0.35

  9. jjircal18
    • 2 years ago
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    how about this? all of the following are ways to right 25 percent of N except 0.25 N ,25n/100, 1/4 N ,25 N

  10. pfenn1
    • 2 years ago
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    Which one do you think?

  11. jjircal18
    • 2 years ago
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    25N?

  12. pfenn1
    • 2 years ago
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    Yep. That one shows 25 times N. The others are all equal to one another.\[0.25 N = \frac{25N}{100}=\frac 14N\]

  13. jjircal18
    • 2 years ago
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    thanks thats pretty good if you havent had math in 30 yrs!!!!

  14. pfenn1
    • 2 years ago
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    You're welcome.

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