Question

6.57 : (0,7+ 0,2) + 7,56 : (0,7-0,2) при х,равном: 0.7​

Answer 1

Ответ:

22.42

Я уверена что так...

Может быть и не правильно

Answer 2

To evaluate the expression with x = 0.7, let's substitute the values and perform the calculations step by step.

Expression: 6.57 : (0.7 + 0.2) + 7.56 : (0.7 - 0.2)

Step 1: Evaluate the parentheses. 0.7 + 0.2 = 0.9 0.7 - 0.2 = 0.5

The expression becomes: 6.57 : 0.9 + 7.56 : 0.5

Step 2: Perform the divisions. 6.57 / 0.9 ≈ 7.3 7.56 / 0.5 = 15.12

The expression becomes: 7.3 + 15.12

Step 3: Add the results. 7.3 + 15.12 ≈ 22.42

Therefore, when x = 0.7, the expression 6.57 : (0.7 + 0.2) + 7.56 : (0.7 - 0.2) evaluates to approximately 22.42.