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anonymous

  • 5 years ago

PLEASE HELP! √(3x)-4=6 I know the answer is 300/6. I just need help explaining the steps. I just do it, but have trouble explaining.

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  1. anonymous
    • 5 years ago
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    36 = 3x-4 40 = 3x x = 40 /3

  2. anonymous
    • 5 years ago
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    so what i didnt get, was even though the 3x was square root, you still divide. I understand you have to simplify.

  3. anonymous
    • 5 years ago
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    because 3x is like 3*x, so you do the opposite on the other side of the equation.

  4. amistre64
    • 5 years ago
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    sqrt(3x) -4 = 6 ; +4 each side sqrt(3x) = 10 ; ^2 both sides 3x = 100 ; /3 both sides x = 100/3

  5. anonymous
    • 5 years ago
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    ack... lol

  6. amistre64
    • 5 years ago
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    :)

  7. anonymous
    • 5 years ago
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    I get too confused on simple mathematics. Im sorry. lol

  8. anonymous
    • 5 years ago
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    i don't sure the function is sqrt (3x) or sqrt (3x-4), thats why parentheses are important

  9. anonymous
    • 5 years ago
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    It is sqrt(3x) -4

  10. amistre64
    • 5 years ago
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    i dont get 300/6 tho...which is the 'right' answer lol

  11. anonymous
    • 5 years ago
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    Yeah, I dont know where I got 300/6

  12. amistre64
    • 5 years ago
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    probably off a sheet of paper you wadded up and threw in the trash where it belonged? :)

  13. anonymous
    • 5 years ago
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    Probably, I might have did 100/3 just typo maybe ? lol.

  14. anonymous
    • 5 years ago
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    I really appreciate the help, tremendously.

  15. amistre64
    • 5 years ago
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    you know; ive answered over 300 questions and still havent gotten the 1st answering machine badge? ...

  16. amistre64
    • 5 years ago
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    :)

  17. anonymous
    • 5 years ago
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    How do I give a badge.... i would give it to you if I could lol. This is my first time using this site.

  18. amistre64
    • 5 years ago
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    badges are given thru performing certain tasks; not handed out really; medals for good answers can be given by the masses tho ;)

  19. anonymous
    • 5 years ago
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    I see, well I wish you the best of luck :) You'll definitely get it in time. I really appreciated the help. Seriously.

  20. anonymous
    • 5 years ago
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    brb

  21. amistre64
    • 5 years ago
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    you might have to hit f5 to refresh your browser to see any 'good answer' buttons next to our names tho

  22. anonymous
    • 5 years ago
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    Why is it, when i try it myself... now i am getting 4/3? I am just trying to do it and get the right answer :/

  23. anonymous
    • 5 years ago
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    nevermind, i see. 4+6. Ah. lol

  24. amistre64
    • 5 years ago
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    :)

  25. anonymous
    • 5 years ago
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    now how would I write this out to double check? would it be.... \[\sqrt{3(100/3)}-4=6 then multiply both sides by 3?\]

  26. anonymous
    • 5 years ago
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    please disregard the one-wordness there lol

  27. amistre64
    • 5 years ago
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    add 4 to both sides first

  28. amistre64
    • 5 years ago
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    then square both sides

  29. anonymous
    • 5 years ago
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    i understand the method. I get confused with fractions

  30. anonymous
    • 5 years ago
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    ack....

  31. anonymous
    • 5 years ago
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    so wait....

  32. amistre64
    • 5 years ago
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    3*(100/3) = 100 sqrt(100 = 10)

  33. amistre64
    • 5 years ago
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    sqrt(100)=10 10-4 = 6 is true

  34. anonymous
    • 5 years ago
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    OOOOO

  35. anonymous
    • 5 years ago
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    wow...

  36. anonymous
    • 5 years ago
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    Wow... i feel stupid at the moment :/

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