Вопрос школьника по предмету Математика
среднее арифметическое двух чисел равно 6,2.одно число в 2,1 раза меньше друго.найдите меньшее число.как решить?
Ответ учителя по предмету Математика
1 число — х2 число — 2,1х(2,1х+х)/2=6,23,1х=12,4х=41 число — 42 число — 8,4Ответ:4
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