Вопрос школьника по предмету Математика
В баке автомобиля 30 л бензина. Расход топлива на каждые 100 км пути составляет 8 л. Хватит ли топлива автомобилю, если его скорость равна 80 км/ч, а время в пути составляет 5 ч?
Ответ учителя по предмету Математика
Пишите, если что не так.
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а) соболь
б) уссурийский тигр
в) лось
г) мамонт
д) снежный барс
е) зубр
2.Упростите выражение: (2а(a^2-9))-1а+3
3.Решите двойное неравенство= -10<3x-4<2
4.Решите систему уравнений: 2x+3y=3
5X+6y=9