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anonymous

  • one year ago

Which expressions are equivalent to the one below? Check all that apply. 10x A. 50x/5x B. 10 • 10x - 1 C. 10 • 10x + 1 D. 50x/5 E. (50/5)x F. x5

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  1. anonymous
    • one year ago
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    Imagine if the variable x were to be equivalent to 1 or 2. Input that into 10x (giving you 10 or 20) then try that same method on the answer choices and the answer will be the one that matches your 10x :)

  2. anonymous
    • one year ago
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    but three are correct

  3. Australopithecus
    • one year ago
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    It says, Check all that apply. that means there are more than one right answer

  4. Australopithecus
    • one year ago
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    Which ones do you think are correct?

  5. anonymous
    • one year ago
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    a, d, and e?

  6. Australopithecus
    • one year ago
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    \[\frac{x}{x} = 1\]

  7. Australopithecus
    • one year ago
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    do you follow?

  8. anonymous
    • one year ago
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    no.. i don't get these

  9. mLe
    • one year ago
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    a number divided by itself would be 1 so x/x would become 1 times what ever else was attached to it and there would be no x left ("a" cough)

  10. Australopithecus
    • one year ago
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    Well you are mostly right. You seem to get this :) dont be so critical. what I am trying to say is variables divide out. Exponent rules: \[x^{0} = 1\] anything to the power of 0 is equal to 1 \[x^{1} = x\] \[x^{2} = x*x\] \[x^{3} = x*x*x\] etc \[x^{a}x^{b} = x^{a+b}\] \[\frac{x^{a}}{x^{b}} = x^{a}x^{-b} = x^{a + (-b)} = x^{a - b}\] \[x^{-1} = \frac{1}{x^1} = \frac{1}{x}\] \[\frac{1}{x^{-1}} = x^{1} = x\] Examples: \[\frac{34x^2}{x} = 34x\] \[x^5x^3 = x^{5+3} = x^{8}\]

  11. Australopithecus
    • one year ago
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    more examples: anything raised to the power of 0 is 1: \[(3 + x + 3b)^{0} = 1\] \[\frac{(3+x)}{x+2} = (3+x)(x+2)^{-1}\]

  12. Australopithecus
    • one year ago
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    does this help?

  13. anonymous
    • one year ago
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    It takes me so long to comprehend math

  14. anonymous
    • one year ago
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    do the answers have to equal the same thing?

  15. Australopithecus
    • one year ago
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    yes

  16. Australopithecus
    • one year ago
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    they all have to equal 10x

  17. Australopithecus
    • one year ago
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    Look at your answers and then look at the rules I gave you

  18. Australopithecus
    • one year ago
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    you are on the right track :)

  19. anonymous
    • one year ago
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    so i would still go with those answers

  20. anonymous
    • one year ago
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    i don't see why I wouldn't?

  21. Preetha
    • one year ago
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    ThatGirl, please don't forget to rate Australopithecus so he can get his reward!

  22. mLe
    • one year ago
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    @thatgirlaggie Reconsider choice A 50x/5x can be rewritten as (50/5)*(x/x) as mentioned, (x/x)=1 and since 50/5 = 10 (50/5)*(x/x) would equal 10 (no x)

  23. Australopithecus
    • one year ago
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    your answers are: \[\frac{50x}{5x}\] \[\frac{50x}{5}\] \[(\frac{50}{5})x\] Multiplication of fraction rule: Note you can divide anything by 1 to make it into a fraction: \[x = \frac{x}{1}\] example: \[62 = \frac{62}{1}\] Multiplication of fractions rule: \[\frac{a}{b}*\frac{b}{c} = \frac{a*b}{b*c}\] example using both \[\frac{52x}{3}*52 = \frac{52x}{3}*\frac{52}{1} = \frac{52x*52}{3*1}\]

  24. Australopithecus
    • one year ago
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    I am giving you rules so you can do these problems I hope that you take the time to review them, it should help you quite a bit, note a, b an x are all just numbers

  25. anonymous
    • one year ago
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    I'm reviewing them and I see what you're saying

  26. Australopithecus
    • one year ago
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    But yes the answer is D and E \[\frac{50x}{5x} = 10*x^{1-1} = 10*x^{0} = 10 \neq 10x\]

  27. anonymous
    • one year ago
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    so because A has two x's, there are only two answers?

  28. Australopithecus
    • one year ago
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    yes

  29. anonymous
    • one year ago
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    i'd say d and e and feel like an idiot now that i get it THANK YOU!!

  30. Australopithecus
    • one year ago
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    the x cancels out in one of them and you end up with just 10

  31. mLe
    • one year ago
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    A has x's that cancel out which is why it does Not work :)

  32. mLe
    • one year ago
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    Don't forget to Rate @Australopithecus for their wonderful help :)

  33. anonymous
    • one year ago
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    how do I rate you?

  34. mLe
    • one year ago
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    top of screen, orange box, "Rate a Qualified Helper"

  35. Australopithecus
    • one year ago
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    Yeah algebra is pretty simple, I recommend looking up alebra rules and to look at them as you work through these problems. It should help you significantly

  36. anonymous
    • one year ago
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    That was wrong

  37. anonymous
    • one year ago
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    it was A, C, and E

  38. Australopithecus
    • one year ago
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    Well they made a mistake lol

  39. Australopithecus
    • one year ago
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    contact your instructor

  40. anonymous
    • one year ago
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    it's a computer. Apex

  41. mLe
    • one year ago
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    could there have been any typos in your question/options?

  42. mLe
    • one year ago
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    perhaps the ^2 did not come through a copy paste in 50x^2/5x ?

  43. Australopithecus
    • one year ago
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    perhaps

  44. Australopithecus
    • one year ago
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    If that is exactly how it is written and you are being graded by this you should contact their support.

  45. Preetha
    • one year ago
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    A,C and E can't be right. Check your question. (-:

  46. anonymous
    • one year ago
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    what is this section of questions?

  47. Preetha
    • one year ago
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    Great explanation Australopithecus!

  48. Australopithecus
    • one year ago
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    Thank you Preetha

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