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nee5277

Someone please help me to study for my test with this review packet!! :)

  • one year ago
  • one year ago

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  1. tictac4456
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    ill help or shall i say ill try

    • one year ago
  2. tictac4456
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    brb

    • one year ago
  3. nee5277
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    \[5^{2}+7^{2}=x^{2} under that is, 25+49=x^{2}, below that is \sqrt{79}=\sqrt{x}^{^{2}} what does x^{2}=?\] & thanks ^.^

    • one year ago
  4. nee5277
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    I wish I could show a pic, it's Pythagonean and Theorem.

    • one year ago
  5. hartnn
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    you want to learn pythagoras theorem or u want to know how \(x=\sqrt{79}\) ??

    • one year ago
  6. hartnn
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    and x^2 = 25+49 = 74

    • one year ago
  7. hartnn
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    not 79

    • one year ago
  8. nee5277
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    Sorry I meant 74, but I wanted to know the answer to it because there are 4 answers, 1)6.3 2)7.1 3)14.1 & 4)17.1

    • one year ago
  9. hartnn
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    then u need to post the entire question clearly....

    • one year ago
  10. hartnn
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    because sqrt 74 = 8.6

    • one year ago
  11. nee5277
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    The end of the dog's leash is attached to the top of a 5-foot-tall fence post, as shown in the diagram below (this is where the equation is) The dog is 7 feet away from the base of the fence post.

    • one year ago
  12. hartnn
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    |dw:1356724058436:dw| whats need to be found ?

    • one year ago
  13. hartnn
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    if x is to be found, its 8.6

    • one year ago
  14. nee5277
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    Okay thanks, how about the legs of an isosceles right triangle each measure 10 inches. WHat is the length of the hypothesis of this triangle, to the nearest tenth of an inch?

    • one year ago
  15. hartnn
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    again pythagoras theorem |dw:1356724579218:dw|

    • one year ago
  16. nee5277
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    Answers are 6.3,7.1,14.1, and 17.1 Would it be 14.1?

    • one year ago
  17. hartnn
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    yes :) did u understand how ?

    • one year ago
  18. nee5277
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    Lol no honestly, I need help, it was just a lucky guess for me because I knew the answer had to have a four in it right?

    • one year ago
  19. hartnn
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    For any right angled triangle, |dw:1356724844491:dw|

    • one year ago
  20. hartnn
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    did u get that ?

    • one year ago
  21. hartnn
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    u had a=b=10 \(c^2=10^2+10^2=200 \\ c=\sqrt{200}=14.1\)

    • one year ago
  22. hartnn
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    which part u have doubt with ??

    • one year ago
  23. nee5277
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    Oh okay I see now thanks :) What is the value of x? \[13x-2(x+4)=8x+1\]

    • one year ago
  24. nee5277
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    So then I would start with 11x-2x+8=8x+1 right?

    • one year ago
  25. nee5277
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    Then add 2x to both sides? 2x+2x, 2x+8x

    • one year ago
  26. hartnn
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    -2(4)=-8 and not +8

    • one year ago
  27. nee5277
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    I'm lost at this part 11x-2x+8=8x+1 +2x +2x 11x+8=10x+1 -10x -10x?

    • one year ago
  28. hartnn
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    sorry, got disconnected \(13x-2(x+4)=8x+1 \\ 13x-2x\large \color{red}{+8}=8x+1 \\11x+8=8x+1 \\ 11x-8x =1-7 \\ 3x=-6 \\x=....?\) ask if there is any doubt in any step...

    • one year ago
  29. nee5277
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    I get it so the answer would be 2?

    • one year ago
  30. nee5277
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    If 3(x+2)-2(x+1)=8 the value of x is? I need help pls.

    • one year ago
  31. hartnn
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    sorry, i did the same mistake again \(13x-2(x+4)=8x+1 \\ 13x-2x\large \color{red}{-8}=8x+1 \\11x-8=8x+1 \\ 11x-8x =1+8 \\ 3x=9 \\x=3\)

    • one year ago
  32. nee5277
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    It's okay :)

    • one year ago
  33. nee5277
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    would be 4 right?

    • one year ago
  34. hartnn
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    3(x+2)-2(x+1)=8 3x+6-2x-2=8 x+4=4 x=4 yes :)

    • one year ago
  35. hartnn
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    *x+4=8

    • one year ago
  36. nee5277
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    Wait for that last one wouldn't it be 2 because 3 goes into 6 twice?

    • one year ago
  37. Nimi404
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    Pls solve this someone has a container with 4200 millilitre of waters are in someone's container

    • one year ago
  38. hartnn
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    sorry, i didn't get your doubt ? 3x=9 so, x=3

    • one year ago
  39. nee5277
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    Oh oh I see sorry lol it looked like a 6 for a minute. thanks. How about Debbie solved a linear equation 3(x+4)-2=16 where did she make an error? Line 1: 3(x+4)-2=16 Line 2: 3(x+4)=18 Line 3: 3x+4=18 Line 4: 3x=14 Line 5: \[4\frac{ 2}{ 3 }\]

    • one year ago
  40. nee5277
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    Oops sorry Line 5 is suppose to say x= then what I put.

    • one year ago
  41. hartnn
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    3(x+4)=18 x+4 = 18/3 =6

    • one year ago
  42. hartnn
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    so, mistake in line 3, while distributing.

    • one year ago
  43. hartnn
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    if more Q coming up, then close this and ask it in a new post...

    • one year ago
  44. nee5277
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    Okay thanks.

    • one year ago
  45. hartnn
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    welcome ^_^

    • one year ago
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