Решебник по математике 6 класс Мерзляк ФГОС Задание 579

 

\[\boxed{\mathbf{579\ (579).}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]

Пояснение.

Решение.

\[1)\ 45\ :5 = 9\]

\[2)\ 4\ :24 = \frac{4}{24} = \frac{1}{6}\]

\[5)\ 1,8\ м\ :30\ см =\]

\[= 180\ см\ :30\ см = \frac{180\ см}{30\ см} = 6\]

\[6)\ 1\ кг\ :125\ г =\]

\[= 1000\ г\ :125\ г = \frac{1000\ г}{125\ г} = 8\]

\[\boxed{\mathbf{579.}\mathbf{\ }}\]

\[1)\ 9,88\ :a = 3,8\]

\[a = 9,88\ :3,8\]

\[a = 988\ :380\]

\[a = 2,6.\]

\[3,8 - b = 1,74\]

\[b = 3,8 - 1,74\]

\[b = 2,06.\]

\[1,74 \cdot c = 6,09\]

\[c = 6,09\ :1,74\]

\[c = 609\ :174\]

\[c = 3,5.\]

\[2)\ 6,2 \cdot x = 17,36\]

\[x = 17,36\ :6,2\]

\[x = 1736\ :620\]

\[x = 2,8.\]

\[17,36 + y = 20,1\]

\[y = 20,1 - 17,36\]

\[y = 2,74.\]

\[20,1\ :z = 1,5\]

\[z = 20,1\ :1,5\]

\[z = 201\ :15\]

\[z = 13,4.\]