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12абра
12абра
17.09.2020 06:07 •  Математика

Знайти області визначення функції
1) f(x)=9/x+4
2) f(x)=x-6/4
3) f(x)=10/√-x-1

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Ответ:
88000535285
88000535285
09.02.2021 09:48
1. Надо нарисовать квадрат со стороной 3 см.
2. Надо две противоположные стороны разделить на 3 части, так что каждая часть будет иметь длину 1 см.
3. Надо соединить двумя линиями точки, которые делят две противоположные стороны на 3 части, так, чтобы соединяющие линии были параллельны сторонам, которые мы не делили.
4. Получится, что квадрат 3 см на 3 см разделен двумя параллельными линиями на 3 прямоугольных треугольника, каждый со сторонами 3 см и 1 см.
5. Каждый из этих прямоугольников 3 см на 1 см и будет одной из трёх долей.
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Ответ:
KatyGey
KatyGey
05.04.2022 13:10

30уч-100%

?уч  - 20%

30*0,2=6(уч)-  на 6 учнів збільшилась кількість учасників гуртка 

30+6=36(уч)-кількість учасників гуртка

    

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          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