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Jenechka2430
@Jenechka2430
July 2022
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Среднее арифметическое двух чисел 9,6. Одно из этих чисел 12,4. Найдите другое число.
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umochka2
Второе число х,тогда ср. арифм. (12,4+х):2=9,6 12,4+х=9,6*2
12,4+х=19,2 х=19,2-12,4 х=6,8
проверим (6,8+12,4):2=19,2:2=9,6
3 votes
Thanks 3
parus77
Verified answer
(х+12,4):2=9,6
х=9,6*2 + 12,4= 6,8
3 votes
Thanks 6
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Answers & Comments
12,4+х=19,2 х=19,2-12,4 х=6,8
проверим (6,8+12,4):2=19,2:2=9,6
Verified answer
(х+12,4):2=9,6х=9,6*2 + 12,4= 6,8