A community for students.

Here's the question you clicked on:

← 55 members online
  • 0 replying
  • 0 viewing

geerky42

  • one year ago

.

  • This Question is Closed
  1. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    @DarkBlueChocobo

  2. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \(\dfrac{2x}{4}-\dfrac{3}{4}\quad\Longleftrightarrow\dfrac{2x-3}{4}\)

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

    Hay there

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

    so then I went

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

    \[\frac{ 2x-3 }{ 4 }=\frac{ 10-15x }{ 6 }\]

  6. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Yes, then you cross-multiply

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

    \[12x-18=40-60x\]

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

    \[72x-18=40\]

  9. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yeah

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

    \[72x=58\]

  11. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Is that enough to tell what kind of equation it is?

  12. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    you can tell that x is going to equal something, so it wont be indentity.

  13. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    two other options are conditional equation and inconsistent equation

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

    Inconsistant i believe?

  15. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    conditional equation true for certain value of x, where if you simplify equation, you end up with x=4 or something inconsistent equation false equation, where you cannot solve for x.

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

    Oh so conditional is just like a usual equation that works out ?

  17. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    If you have something like x+1 = x+2, it's inconsistent equation because you end up with 1=2

  18. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yeah

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

    lel wow the facepalms are coming out today boys

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

    1c. 0=8 so this is false or inconsistent?

  21. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    pretty much both

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

    I am having many issues on 2a

  23. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    inconsistent equation is kind of fancy way to say false equation lol

  24. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    you would need to combine fraction on right side. To do so, you need to get denominator to be same

  25. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    you have \(y-2\) and \(y+1\) So you just multiply numerator and denominator by \(y+1\) for first fraction and \(y-2\) for second

  26. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \[\dfrac{1}{y-2}-\dfrac{2}{y+1}\quad\longrightarrow\dfrac{y+1}{y+1}\cdot\dfrac{1}{y-2}-\dfrac{2}{y+1}\cdot\dfrac{y-2}{y-2}\]

  27. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Does that make sense? Basically you just need to get denominator to be same, so you just multiply numerator and denominator by something that would get you to desired denominator

  28. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    kinda hard for me to explain lol

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

    so 1/(y+1)(y-2) - 4/(y+1)(y-2) ?

  30. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \[\dfrac{y+1}{y+1}\cdot\dfrac{1}{y-2}-\dfrac{2}{y+1}\cdot\dfrac{y-2}{y-2}\\~\\= \dfrac{y+1}{(y+1)(y-2)} - \dfrac{2(y-2)}{(y+1)(y-2)}\\~\\=\dfrac{y+1-2(y-2)}{(y+1)(y-2)}\]

  31. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    ok let's start with something simply. \(\dfrac{1}{6}+\dfrac{1}{2}\) How can we combine fraction here?

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

    multiply by 3/3

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

    so 1/6+1/2*3/3

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

    so you would get 1/6+3/6

  35. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    right, so for problem 2a. it's same idea, just with variable.

  36. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    get what I am saying here?

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

    Yes I do its just weird for me to visualize and see it right away t-t idk why

  38. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    because it's something new for you, I guess?

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

    Well like the bigness of the equation kinda like put me in my place kinda deal

  40. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    ok, so now we have \[\dfrac{y+1-2(y-2)}{(y+1)(y-2)}\] simplify numerator

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

    \[y+1-2y+4\]

  42. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    CLEP test seem little harsh lol...

  43. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    don't forgot combine like term

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

    yeh was just showing steps

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

    -y+5

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

    It does seem harsh :/ I'm gonna like work myself to the point of no return so I do well on it . I want this

  47. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Right. Now cross multiply \[\dfrac{7}{y^2-y-2} = \dfrac{-y+5}{(y-2)(y+1)}\longrightarrow~?\]

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

    so we have to do the same with the other side then get (y-2)(y+1) as denominator?

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

    oh i guess we dont

  50. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Not really. denominator doesn't matter if they are on different side of equation.

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

    \[y^2(-y+5) ,-y(-y+5),-2(-y+5)\] would this work?

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

    so I got -y3 + 5y^2 y^2 + 5y 2y+10

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

    before combining

  54. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    -y^3 + 5y^2 y^2 - 5y 2y-10

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

    damn i messed up multiplying

  56. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    you just messed up with +/- signs

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

    \[-y^2+6y^2-3y-10\]

  58. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yeah

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

    now the other side

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

    let me delete that i need to slow down

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

    7(y+1) 7(y-2) 14y+7, 14y-14 14y+14y, 7-14

  62. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    none. left side should start with \(7(y+1)(y-2)\)

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

    so just keep it as is o.o?

  64. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    So firstly, you expand \((y+1)(y-2)\)

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

    why not work out?

  66. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    You only distribute something with plus sign. \(a(b+c) = ab+ac\) But \(a(bc) = abc\)

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

    Alrights

  68. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    make sense?

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

    Yes it does

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

    y^2+-2y+y-2?

  71. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Yeah

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

    so we have \[y^2-y-2=-y^3+6y^2-3y-10\]

  73. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    you forgot 7

  74. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \[7(y^2-y-2)=-y^3+6y^2-3y-10\]

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

    damn

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

    so do we expand it out with 7 now?

  77. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yup

  78. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \[7y^2-7y-14=-y^3+6y^2-3y-10\]

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

    I got that

  80. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    now take all terms to right side; \(0 = -y^3-y^2+4y-4\)

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

    can confirm got that after working out

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

    lel sorry I doing this in a note book :p

  83. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    know what to do from here?

  84. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Notice something you can factor out? Hint: \[0 = \boxed{-y^3-y^2}+\boxed{4y-4}\]

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

    we can simplify ?

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

    oh you asked lol

  87. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Oops should be \(0 = -y^3-y^2+4y+4\)

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

    would we simplify the y's?

  89. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    well, actually we try to factor, so we can easily figure out solutions.

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

    -1(y^2+4)(y+1)

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

    Would that be how we factor it?

  92. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    close. should be \((y+1)(4-y^2)\)

  93. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Then you can factor \(4-y^2\)

  94. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    or you can "factor out" -1 from \(4-y^2\) So you would have something like \((-1)(y^2-4)\)

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

    -y^2+4. Doesnt this just put us back where we were?

  96. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Yeah, just to make it slightly easier to factor out, but never mind.

  97. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    factoring -1 out is just optional.

  98. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    You got \(0 = (y+1)(2-y)(y+2)\)?

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

    Yes that would be it fully factored

  100. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yeah, now can you find solutions?

  101. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I was thinking, maybe we need to do something more efficient with time. we spend a lot of time on few problems lol.

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

    indeed. Im just confusedwhere to go from here like.... you are dealing with 3 exponents of y and you need to get it to 1 y to solve for the question

  103. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    you are confused on how to get solution?

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

    Yes... like right now I feel like you could take -y^2 add to both sides and square both sides so you could get y=sqrt-y^3+4y-4

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

    But that wouldn't work so I just am straight confused where to go from here

  106. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    while solving for something, we want equation to be fully factored, so we can apply something (I forgot name) that states that If ab = 0, then either a = 0 or b = 0

  107. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    So we can "split" equation into \(0 = y+1\) or \(0=2-y\) or \(0=y+2\)

  108. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    So from here, just solve for y from each equation Does that make sense?

  109. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Who gave you medal? lol

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

    Lol I have no clue, and Yeah that makes sense in order to get it fully factored when you have many parts

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

    y=-1 or y=2 or y=-2

  112. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    hmm Now plug y = -1 or y = 2 back into original equation

  113. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    what happens?

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

    i got 7/0=1/0-2/3

  115. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yeah. zero in denominator. So we are left with y = -2 That it lol

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

    wait how we left with -2?

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

    s: we still had -2/3 left ove

  118. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    y = -1 and y = 2 get us zero in denominator, so they are invalid solutions.

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

    oh that makes sense nvm so we would try y=-2

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

    and baddabing there it comes out

  121. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    You can. and you will get true equation.

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

    Yeh Imma try that second one alone and check it laters just to make sure I understand this

  123. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    alright

  124. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1434844521381:dw|

  125. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    ehh not right reaction, but whatever

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

    loool wowsers

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

    Alright so with the first word problem., Ralph = 6-2n? Ralph + Tommy= 30?

  128. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    R = 2T - 6 R+T = 30

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

    Could we set the equation to 2t-6=30? Cause we know the total it could be

  130. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1434844843534:dw|

  131. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yeah you could do that

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

    |dw:1434844913540:dw|

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

    you have beautiful mouse control lol

  134. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    thanks lol

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

    3t=36 36/3 t=12

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

    so we know Tommy scored 12 12*2 R=24-6=18

  137. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1434845125612:dw|

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

    lol Loki pls

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

    So this one is worded weirdly for me it sounds like we are using multiple variables?

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

    OH wait no

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

    twice the 3rd is 86

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

    86/2

  143. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    no

  144. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    let's go ahead and set up equation

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

    Alright

  146. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    we can let first age be \(a\) So second age would be \(a+2\) third age is \(a+4\) Because we are given that three ages arethree even CONSECUTIVE integers

  147. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    "If the sum of the 1st, four times the 2nd, and twice the 3rd is 86, what are the three ages?" So we have \(a + 4(a+2)+2(a+4) = 86\) Make sense?

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

    Yep. As I fail reading it. It sounded really weird to me egh.

  149. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yeah weird worded, I had to read twice lol.

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

    a+4a+8+2a+8=86 7a+16=86 7a=70 a=10 First Kid=10 Second Kid= 12 Third Kid = 14

  151. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Yep!

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

    The next one is 20%*n=960?

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

    or .2n=960?

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

    n being the original price

  155. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \(20\%\) off means you only pay 80% of original price. So that would be .8n = 960

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

    wow

  157. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    wow such deal amazing price wow

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

    well screw me lol

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

    I was like yeh man that makes sense. Then like boom .8 is the original price payed

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

    n=1200 That makes sense cause 960/.2 is like 4000 so yeh thats a lot more sense

  161. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yeah lol

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

    and 1200-240=960

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

    3y=2x-5 y=2/3x-5/3

  164. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    correct

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

    or y=.67x-1.67

  166. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    often we prefer to just leave it as fraction

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

    Alrights will do :p

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

    Next one would it look like x(x-5-7)

  169. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    get all term to one side So you have \(x^2-5x-14\)

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

    Well damn I just realized I can't cut it in half cause 5 is a prime number so I would have to multiply it by 2 and that would be 2*5 and thats 10 egh

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

    the most you can do its take x out?

  172. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    well, we just factor into something like \((x-a)(x+b)\)

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

    Oh gawd more facepalms rolling out

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

    Cause we legit just did that like 2 problems ago ._.

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

    well 3

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

    So how would we deal with 5 ?

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

    cause other than the 5 i know how to solve this

  178. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    well, you can add itself by 2x, then you also subtract by 2x, to keep" balance" So you have \(x^2-5x-14+ 2x-2x~~~\Rightarrow~~~x^2+2x-7x-14\) Now can you factor?

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

    (x+2)(x+7)

  180. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Or to factor, you can ask yourself ab = 14 b+a = -5 So what are a and b?

  181. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    close. it's \((x+2)(x-7)\)

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

    oh damn didnt realize the subtraction signs

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

    So for the next one can we do 6x^2 +3x + 4x +6?

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

    i mean +2

  185. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yeah

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

    Got it !(3x+2)(2x+1)

  187. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yay lol

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

    so to complete the square of the next problem you would do b=2 (2/2)^2 = 1 x^2 + 2x +1 = 5+1 (x+1)^2 =6

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

    i think

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

    i had to like triple check this lel

  191. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Actually it's \((x+1)^2=-4\)

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

    Wow hows?

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

    Where did I go wrong

  194. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    You already have 5 there, and you want 1, so you subtract both sides by 4

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

    Oh welp that would make sense

  196. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    so as you can see. no real root.

  197. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    because when you square any real number, it is always positive. But here, you have -4/

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

    So for the next one then so you divide both sides by 2 to x^2 alone so x^2-7/2x+3=0

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

    ((7/2)/2)^2 so 3.1 is the decimal

  200. geerky42
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    you only need b/2 So you would have 7/4 \((x-\frac74)^2\)

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

    The like rules they giving me is to get x^2 secluded s:

  202. 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 β†’ 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.
  • βœ” 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.