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Mathematics
06.04.2023 07:42
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1 oto đi từ A đến B với vận tốc trung bình 50km/h. Khi từ B về A xe đi với vận tốc

1 oto đi từ A đến B với vận tốc trung bình 50km/h. Khi từ B về A xe đi với vận tốc 60km/h nên thời gian về ít hơn thời gian đi 30’. Tính độ dài quãng đường AB
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toxsicity
toxsicity
4,8(35 marks)
\bf \textit{ratios relations for similar figures}
\\\\\\
\begin{array}{cccllll}
side&area&volume\\
\textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\\
\frac{s}{s}=\frac{s}{s}&\frac{s^2}{s^2}=\frac{area}{area}&\frac{s^3}{s^3}=\frac{volume}{volume}
\end{array}\\\\
-----------------------------\\\\


\bf thus
\\\\\\
\begin{array}{llll}
\cfrac{\textit{polygon A}}{\textit{polygon B}}\qquad &\cfrac{24^2}{15^2}=\cfrac{128}{x}
\end{array}

solve for "x"

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