Предмет: Математика, автор: Citrus1742

Какое из следующих чисел заключено между числами 18/17 и 17/15? объясните, пожалуйста)

Ответы

Автор ответа: Iska1996
0
Ответ: 4)1,1         Нас спрашивают какое число из вариантов находится между 1,05(это 18/17) и 1,13(это 17/15).Тоесть какое число между 1,05 и 1,13.Этим числом является 1,1
Автор ответа: Citrus1742
0
ничего:)
Автор ответа: Iska1996
0
Вы вправе выбрать другое решение
Автор ответа: IUV
0
для Citrus1742
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числа 18/17 и 17/15 больше единицы
значит первые три варианта не подходят точно
осталось сравнить 18/17 с 1,1 и 17/15 с 1,1
17/15 и 1,1
17/15 и 11/10
34/30 и 33/30 - первое больше
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18/17 и 1,1
18/17 и 11/10
18*10/170 и 11*17/170
180/170 и 187/170- первое меньше
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доказано
Автор ответа: Citrus1742
0
IUV, спасибо, теперь понятно.
Автор ответа: nafanya2014
0
Обе дроби больше 1. Причем первая на 1/17, а вторая на 2/15.
Значит ответ 1.1
Доказательство: 1/17<1/10 из двух дробей с одинаковыми числителями меньше та, у которой знаменатель больше.
1/10=3/30<4|30=2/15.
Итак,
1/17<1/10<2/15.
Значит 1 целая 1/17 <1,1<1 целая 2/15
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