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anonymous

  • 5 years ago

How many solutions are there for the equation? x2 + 16 = 8x A. 2 B. 1 C. 0 I put B correct?

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  1. anonymous
    • 5 years ago
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    yes

  2. anonymous
    • 5 years ago
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    :P Are you just guessing Satellite? :P Ur answering rly fast.. lol

  3. anonymous
    • 5 years ago
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    \[x^2-8x+16=(x-4)^2\]

  4. anonymous
    • 5 years ago
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    so only one answer: x=4

  5. anonymous
    • 5 years ago
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    (: okay

  6. anonymous
    • 5 years ago
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    what you think i made it up?

  7. anonymous
    • 5 years ago
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    How many solutions are there for the equation? x2 + 9x = -7 A. 2 B. 1 C. 0 I put A. right? and idk lol this person gave me random answers before just to get medals... dont see the good in that but thats what they did! :P I believe you though (:

  8. anonymous
    • 5 years ago
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    i think you are supposed to write \[x^2+9x+7=0\] and since this doesn't factor over the integers you have to compute \[9^2-4\times 1\times 7\] and see if it is positive, which it is, so you have two answers \

  9. anonymous
    • 5 years ago
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    random answers is not good;(

  10. anonymous
    • 5 years ago
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    Hmmm So then i got it right ... eh?

  11. anonymous
    • 5 years ago
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    yes it is right. two anwers.

  12. anonymous
    • 5 years ago
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    next?

  13. anonymous
    • 5 years ago
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    (: haha woo hoo!! so far so good!!

  14. anonymous
    • 5 years ago
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    A boy standing on a 64 foot cliff drops a coin off the cliff. If the equation of the height h of the coin t seconds after it drops is h = -16t2 + 64, about how many seconds will the coin take to reach the bottom of the cliff? A. 1 second B. 1.5 seconds C. 2 seconds D. 2.5 seconds i guessed on this one and i got B

  15. anonymous
    • 5 years ago
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    \[-16t^2+64=0\] \[16t^2=64\] \[t^2=4\] \[t=2\]

  16. anonymous
    • 5 years ago
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    no guessing.

  17. anonymous
    • 5 years ago
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    ^_^ haha okay. Thanks!! (: next one Solve the equation by graphing. x2 + 5x + 8 = 0 A. {-5, 8} B. {2, 4} C. {-4, 5} D. no solution I got D correct? (:

  18. anonymous
    • 5 years ago
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    yes

  19. anonymous
    • 5 years ago
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    sits above the x - axis. not zeros

  20. anonymous
    • 5 years ago
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    (: Ivys kinda smart isnt she? lmao haha I guess i remembered more than i thought on this one :P

  21. anonymous
    • 5 years ago
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    So far only one wrong!! ^^

  22. anonymous
    • 5 years ago
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    good. just guessing or doing any work?

  23. anonymous
    • 5 years ago
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    Last one!! Solve the equation by graphing. x2 - 18x + 81 = 0 A. {-2, 9} B. {9/2, 3} C. {9} D. no solution I got C.. am i right? And i have been doing work (:

  24. anonymous
    • 5 years ago
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    \[x^2-18x+81=(x-9)^2\]

  25. anonymous
    • 5 years ago
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    answer is 9

  26. anonymous
    • 5 years ago
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    Woooo!!!!! :D turns out doing the work works mucho bettah

  27. anonymous
    • 5 years ago
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    is there more or is that all?

  28. anonymous
    • 5 years ago
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    yeah go figure nothing like actually computing!

  29. anonymous
    • 5 years ago
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    Nope. I turned it in and i got 100% i could kiss you!! lol I love this cite!!

  30. anonymous
    • 5 years ago
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    done! now forget math and do something else.

  31. anonymous
    • 5 years ago
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    congrats

  32. anonymous
    • 5 years ago
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    Haha i cant :P

  33. anonymous
    • 5 years ago
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    why?

  34. anonymous
    • 5 years ago
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    Too much work to do. Too little time.

  35. anonymous
    • 5 years ago
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    lol

  36. anonymous
    • 5 years ago
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    lol!

  37. anonymous
    • 5 years ago
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    ok i will do something else. have fun

  38. anonymous
    • 5 years ago
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    I HAVE to get my grade up to B i HAVE to!!!!!!!!! I about ready to pull out my hair!!! All i know is i AM getting that grade up before i take the exam!!!!!!!! AHHHH!! lol

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