Предмет: Математика, автор: milanaperevalova56

ПОЖАЛУЙСТА СРОЧНО ОТВЕТЬТЕ

Приложения:

Ответы

Автор ответа: kingwolfrap
1

1. (0.2+5.4+6.1)/3=11.7/3=3.9

Ответ: 3.9

2. (2.4+3.6+x)/3=3

3(2.4+3.6+x)/3=3*3

2.4+3.6+x=9

x=9-6

x=3

Ответ: 3

3. 1) 1.5*3=4.5км

2) 2.5*4=10км

3) 4.5+10=14.5км весь путь

4) 1.5+2.5=4ч всё время

5) 14.5/4=3.625км/ч средняя скорость пешехода.

Ответ: 3.625км/ч

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