Вопрос школьника по предмету Математика
найдите значение выражения 3.3/8-4/9+9,54
Ответ учителя по предмету Математика
3.3*(9+9.54) 29.7+31.482 61.182
—————— = ——————— = ———— = 15.2955
4 4 4
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Пять километров.
Семь процентов.
1.to put emphasis on the duration of an action that started in the past and continuestraight up to present.
2. for an action that started in the past and lasted for some time. It may be continuing or has finished but its results are visible in the present.
**3*-25*6=1*44
*52*-*7*8=3*94
а)Co2
б) Cuo
в)SeO3
г)NO