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Eli_So_Awsome

  • 3 years ago

How many solutions does the system have? 3x + 12y = 20 y = –1/4 x + 5/3

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  1. Aylin
    • 3 years ago
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    Do you know how to solve systems such as this?

  2. Aylin
    • 3 years ago
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    Hint: multiply\[y=\frac{-x}{4}+\frac{5}{3}\]by 12.

  3. TheViper
    • 3 years ago
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    If \[\Large{\dfrac{a_1}{a_2}=\dfrac{b_1}{b_2}=\dfrac{c_1}{c_2}}\] Then it has INFINITELY MANY solutions. \[\Large{\dfrac{a_1}{a_2}=\dfrac{b_1}{b_2}\neq\dfrac{c_1}{c_2}}\] Then it has NO solutions. \[\Large{\dfrac{a_1}{a_2}\neq\dfrac{b_1}{b_2}}\] Then it has only ONE solution.

  4. TheViper
    • 3 years ago
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    Here, \[\Large{\color{red}{a_1=3, a_2=\dfrac{-1}{4}, b_1=12, b_2=1, c_1=20, c_2=\dfrac{5}{3}.}}\]

  5. Eli_So_Awsome
    • 3 years ago
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    oh alright i think i see

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