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Romashka-Z-Leto [24]
2 years ago
11

What’s the proportion for this?

Mathematics
1 answer:
11Alexandr11 [23.1K]2 years ago
6 0

\frac{15}{30}=\frac{18}{x}\\\frac{1}{2}=\frac{18}{x}\\x=2\cdot18\\x=36

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=

−

±

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x=\frac{-{\color{#e8710a}{b}} \pm \sqrt{{\color{#e8710a}{b}}^{2}-4{\color{#c92786}{a}}{\color{#129eaf}{c}}}}{2{\color{#c92786}{a}}}

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=

6

a={\color{#c92786}{6}}

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=

−

5

b={\color{#e8710a}{-5}}

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(

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