Предмет: Математика, автор: ukraino4ka19861

Відрізок довжиною 27 см поділили на частини, пропорційності числам 7 см і 2 см . Знайдіть довжину кожної частини
1 з цих відповідей є правильна
14 см і 13 см
20 см і 7 см
18 см і 9 см
21 см і 6 см

Ответы

Автор ответа: xram7474

0

к -коэф.пропорциональности
7к+2к=27
9к=27
к=27/9
к=3
7*3=21
2*3=6
правильный последний ответ

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