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anonymous

  • 5 years ago

Use the quadratic formula to find the x-intercepts of the function. Round to the nearest tenth if necessary. y = -2x2 + 5x - 1 A. {2.3, 0.2} B. {2.2, -5.8} C. {-9.2, -0.8} D. no real solution

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  1. anonymous
    • 5 years ago
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    \[\frac{5\pm\sqrt{17}}{4}\]

  2. anonymous
    • 5 years ago
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    best answer is A

  3. anonymous
    • 5 years ago
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    Hmmm alright (: Thanks!!!

  4. anonymous
    • 5 years ago
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    Can you help me on like my last 6 questions?

  5. anonymous
    • 5 years ago
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    i just computed first by quadratic formula, then plug in to calculator

  6. anonymous
    • 5 years ago
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    ok shoot

  7. anonymous
    • 5 years ago
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    pleaseeeeee? u dont have to.. but i would like it!

  8. anonymous
    • 5 years ago
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    i am ready, lets do it.

  9. anonymous
    • 5 years ago
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    Solve, using the square root method: 5x2 = 60. Round the solution to the nearest tenth. A. {3.5, -3.5} B. {7.7, -7.7} C. {3.5} D. No real solution

  10. anonymous
    • 5 years ago
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    (: So generous!! :D

  11. anonymous
    • 5 years ago
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    3.5, -3.5

  12. anonymous
    • 5 years ago
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    5 to go

  13. anonymous
    • 5 years ago
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    A?

  14. anonymous
    • 5 years ago
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    A

  15. anonymous
    • 5 years ago
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    Okay next one Solve using the square root method. Round to the nearest tenth if necessary. x2 + 15 =0 A. {3.9} B. {3.9, -3.9} C. {7.5, -7.5} D. no real solution

  16. anonymous
    • 5 years ago
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    no real solution since \[x^2=-15\] has no real answer

  17. anonymous
    • 5 years ago
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    4 to go

  18. anonymous
    • 5 years ago
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    OKay so D Next one Which number completes the perfect square trinomial? x2 + 20x + ? A. 40 B. 100 C. 25 D. 80

  19. anonymous
    • 5 years ago
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    100

  20. anonymous
    • 5 years ago
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    (:

  21. anonymous
    • 5 years ago
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    half of 20 is 10, 10 squared is 100

  22. anonymous
    • 5 years ago
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    3 more

  23. anonymous
    • 5 years ago
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    Okay (: Use the quadratic formula to solve the problem. A soccer player throws the ball onto the field from the sideline. An equation modeling the ball's flight is h = -16t2 + 18t + 2. In how many seconds will the ball reach the ground? A. in about 2 seconds B. in about 1.2 seconds C. in about 1.8 seconds D. Cannot be determined

  24. anonymous
    • 5 years ago
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    set \[-16t^2+18t+2=0\] solve for t

  25. anonymous
    • 5 years ago
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    B

  26. anonymous
    • 5 years ago
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    about 1.2

  27. anonymous
    • 5 years ago
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    Haha yea alright (: Thanks soooo much btw (: Next.. Which of the following shows the square completed in the this equation? x2 + 3x - 5 = 0 A. (x + 9)2 = 14 B. (x - 3)2 = 8 C. (x + 1.5)2 = 7.25

  28. anonymous
    • 5 years ago
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    this is nonsense by the way unless he throws it straight up in the air. if he throws it out on the field equation makes no sense

  29. anonymous
    • 5 years ago
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    C

  30. anonymous
    • 5 years ago
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    Yea... thats true!!

  31. anonymous
    • 5 years ago
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    one more?

  32. anonymous
    • 5 years ago
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    2 more! here they are Solve the following using the quadratic formula. Round to the nearest tenth if necessary. 2x2 + 9x + 4 = 0 A. {-4, -0.5} B. {-16, -2} C. {-8, -1} D. no real solution Use the quadratic formula to find the zeros of the function y = 2x2 + 3x + 6. Round to the nearest tenth if necessary. A. {-1.7, 2.3} B. {-2.4, 2.4} C. {-2.3, 0.8} D. no real solution

  33. anonymous
    • 5 years ago
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    ohh u dont have to do the last one then if u dont want to (:

  34. anonymous
    • 5 years ago
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    i miscounted my bad! ^^

  35. anonymous
    • 5 years ago
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    first one is A, -4 and -.5

  36. anonymous
    • 5 years ago
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    no problem we do the last one now

  37. anonymous
    • 5 years ago
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    Okay (:

  38. anonymous
    • 5 years ago
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    ahww thanks!! =3

  39. anonymous
    • 5 years ago
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    no solution

  40. anonymous
    • 5 years ago
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    OKay (: OMFG i could seriously stalk you right now!!! (lmfao) I got another 100% I am totally getting it back to a B!!!! And its all thanks to youuuuuuuuu!!! <3

  41. anonymous
    • 5 years ago
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    are you taking this on line?

  42. anonymous
    • 5 years ago
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    Yep!! (; Haha

  43. anonymous
    • 5 years ago
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    way to go!

  44. anonymous
    • 5 years ago
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    Its hard as hell!!!

  45. anonymous
    • 5 years ago
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    how can you miss? just ask and you get the answers.

  46. anonymous
    • 5 years ago
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    and now i am done for the evening. gnight!

  47. anonymous
    • 5 years ago
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    Ikr!! haha i usually get those ppl who only want metals :P And they give me wrong answerssss..... and okay thanks sooooooooooooooooooooo much!!!!!! (: Hope i see u again!! (:

  48. anonymous
    • 5 years ago
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    ok maybe tomorrow.

  49. anonymous
    • 5 years ago
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    very welcome.

  50. anonymous
    • 5 years ago
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    (:

  51. anonymous
    • 5 years ago
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    :)

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