ПРОПОРЦИИ 1. X/15 = 4/5 2. 2/x = 6/7 3. 8/9 = x/27 4. 10/23= 4/x
ПРОПОРЦИИ
1. X/15 = 4/5
2. 2/x = 6/7
3. 8/9 = x/27
4. 10/23= 4/x
Гость
Ответ(ы) на вопрос:
Гость1. x/15 = 4/5; x = (4*15)/5 = 4*3 = 12;
2. 2/x = 6/7; x = (2*7)/6 = 7/3 = 2 1/3;
3. 8/9 = x/27; x = (8*27)/9 = 8*3 = 24;
4. 10/23= 4/x; x = (4*23)/10 = (2*23)/5 = 46/5 = 9 1/5;
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