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nee5277

  • one year ago

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

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  1. tictac4456
    • one year ago
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    ill help or shall i say ill try

  2. tictac4456
    • one year ago
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    brb

  3. nee5277
    • one year ago
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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 ^.^

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

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

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

  7. hartnn
    • one year ago
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    not 79

  8. nee5277
    • one year ago
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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

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

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

  11. nee5277
    • one year ago
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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.

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

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

  14. nee5277
    • one year ago
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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?

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

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

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

  18. nee5277
    • one year ago
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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?

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

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

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

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

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

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

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

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

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

  28. hartnn
    • one year ago
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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...

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

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

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

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

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

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

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

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

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

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

  39. nee5277
    • one year ago
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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: \[4\frac{ 2}{ 3 }\]

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

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

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

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

  44. nee5277
    • one year ago
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    Okay thanks.

  45. hartnn
    • one year ago
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    welcome ^_^

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