Quantcast

A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

kristinak

  • one year ago

A quadratic equation is shown below: x2 - 8x + 13 = 0 Which of the following is the first correct step to write the above equation in the form (x - p)2 = q, where p and q are integers? Subtract 5 from both sides of the equation Subtract 3 from both sides of the equation Add 5 to both sides of the equation Add 3 to both sides of the equation

  • This Question is Closed
  1. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    do you know how to complete the square? let's practice do you think x^2-2x+1 can be written as a square?

  2. kristinak
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    yes

  3. kristinak
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    @myininaya

  4. kristinak
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    i was thnking it was D?

  5. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    can you write is as a square for me?

  6. kristinak
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    (X-1)^2

  7. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    okay so if you do that then we have x^2-8x+13+3=0+3 x^2-8x+16=3

  8. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    so are you think x^2-8x+16 can be written as square?

  9. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    and you are right about my example

  10. kristinak
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Yes

  11. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    x^2-8x+16 can be written as (x- ? )^2

  12. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    what is ?

  13. kristinak
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    (x-4)^2

  14. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yeah

  15. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    you did this all by yourself @kristinak

  16. kristinak
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    yeah but i still dont know the answer

  17. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    you are saying we have (x-4)^2=3

  18. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    4 and 3 are totally integers

  19. kristinak
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    so its b?

  20. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    :(

  21. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Can you tell me where you are confused on your first choice?

  22. kristinak
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    i thought you said i was wrong when i said it was D?

  23. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    never said that

  24. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    i simply was working through what D would have given us

  25. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    do you not think 4 and 3 are integers?

  26. kristinak
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    No they are

  27. kristinak
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    thank you so much, sorry i was confused

  28. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    its okay

  29. kristinak
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    can you help me with another?

  30. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    alright

  31. kristinak
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    one moment

  32. kristinak
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    1 Attachment
  33. kristinak
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    @myininaya

  34. kristinak
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    its the screenshot

  35. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    can you find the vertex for the first one?

  36. kristinak
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    one moment

  37. kristinak
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    (70,55)

  38. kristinak
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    am i right?

  39. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    beautiful!

  40. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    now the vertex is very important for consider the min or even the max for a parabola that is why i asked for the other graph i think a good way to approximate the vertex is just plot those points given

  41. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    i want you to speculate on what you think the vertex is

  42. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    now it helped me to actually plot the points so i encourage you to do so

  43. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    tell me what you think looks like the middle point of that graph

  44. kristinak
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    (1,899.50)

  45. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    that is very great

  46. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    now the y values for each of these points is the amount of min production cost from each graph

  47. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    aka lowest y value for each graph

  48. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    the question ask you to compare the y values basically it ask which one is greater

  49. kristinak
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    company 2?

  50. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    right because 899.5>55 so company 2 has a bigger min production cost

  51. kristinak
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    thank you!! can you help me with like 2 or 3 more?

  52. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    honestly i cannot i have to leave i suggest posting a new question

  53. kristinak
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    oh okay thank you

  54. myininaya
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    np have a great night

  55. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.