Question

2x (8,5-x)+1,2 при x=2,5​

Answer 1

31,2 Вот пожалуйста) Ответ должен

Answer 2

Ответ: 31,2

Объяснение:

2x × (8,5-x)+1,2=31,2​

1) 2x =2×2,5=5

2) (8,5-x)=8,5-2,5=6

3) 5×6=30

4) 30+1,2=31,2

Answer 3

To evaluate the expression 2x(8.5 - x) + 1.2 when x = 2.5, we substitute the value of x into the expression and perform the calculations.

Let's substitute x = 2.5 into the expression:

2(2.5)(8.5 - 2.5) + 1.2

Now, we can simplify the expression:

2(2.5)(6) + 1.2

= 5(6) + 1.2

= 30 + 1.2

= 31.2

Therefore, when x = 2.5, the expression 2x(8.5 - x) + 1.2 evaluates to 31.2.