Johnston Edwards
07/08/2023 · Junior High School
3.42 Найдите неизвестный член пропорции: \( \begin{array}{lll}\text { б) } 10,5: 7-5 \frac{1}{4}: 3 \frac{1}{2} ; & \text { г) } \frac{0,43}{0,9}=\frac{0,131}{0,27} ; & \text { е) } \frac{17}{1,4}=\frac{2,4}{0,07} \\ \begin{array}{ll}\text { а) } t: 42,4=26,1: 63,6 ; & \text { в) } 4,5: 2,25=y: 3,5 ; \\ \text { б) } 4 \frac{1}{2}: 2 \frac{2}{5}=3 \frac{1}{4}: t ; & \text { г) } \frac{25}{6}: x=\frac{20}{21}: \frac{4}{7}\end{array} \\ 3.43 \text { Найдите неизвестный член пропорции: } \\ \begin{array}{ll}\text { а) } \frac{42,6}{x}=\frac{5,34}{4,45} ; & \text { в) } \frac{1,7}{2,1}=\frac{5,1}{p} ;\end{array}\end{array} \).
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**3.42**
а) \( t \approx 17,37 \)
б) \( t \approx 1,73 \)
в) \( y \approx 7 \)
г) \( x = 17,5 \)
**3.43**
а) \( x \approx 35,47 \)
б) \( p \approx 6.29 \)
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