Вопрос школьника по предмету Математика
Начертите прямоугольник со сторонами 5см и 3 см найдите его периметр
Ответ учителя по предмету Математика
Ответ:
Периметр = (5+3) * 2 = 16 (см)
площадь = 5*3 = 15 (см квадратных)
ответ: площадь=15 см 2; периметр=16 см
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Задание 2.
Раскройте скобки, используя подходящую степень сравнения прилагательного.
1. This man is (tall) than that one. 2. Asia is (large) than Australia. 3. The Volga is (short) than the Mississippi. 4. Which building is the (high) in Moscow? 5. Mary is a (good) student than Lucy. 6. The Alps are (high) than the Urals. 7. This garden is the (beautiful) in our town. 8. She speaks Italian (good) than English. 9. Is the word «newspaper» (long) than the word «book»? 10. The Thames is (short) than the Volga.
два поезда отошли от двух станций и встретились через 3ч 40 минут после отправления. один из поездов проходит всё расстояние за 5.5 часов. За сколько часов проедет всё расстояние 2 поезд
2. 6x-1=2(3x+1)