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lisabon 2012 [21]
3 years ago
12

Which system of equations below has no solution?

Mathematics
2 answers:
Dmitrij [34]3 years ago
8 0

y = 4x + 5 and y = 4x - 5

timurjin [86]3 years ago
3 0

non but third

we can solve all of them because they are parallel but third isn't.

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Answer:

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General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

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Step-by-step explanation:

<u>Step 1: Define</u>

100 + 50 × 10

<u>Step 2: Evaluate</u>

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\huge\boxed{x=1,\ y=2\to(1,\ 2)}

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\left\{\begin{array}{ccc}3x+4y=11\\x-2y=-3&\text{multiply both sides by (-3)}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}3x+4y=11\\-3x+6y=9\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad\ \ \ \ 10y=20\qquad\text{divide both sides by 10}\\.\qquad\qquad\boxed{y=2}\\\\\text{subtitute it to the second equation:}\\x-2(2)=-3\\x-4=-3\qquad\text{add 4 to both sides}\\\boxed{x=1}

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