19. Pemmre: 5,1:1,3-0,2-6,5:1,7/9,8.3+0,2-3 =? A) 3,5 B】 2,5 C) 0,8 D) 0,1​

Ответ:

Let's solve the expression step-by-step:

Division:

6.5 divided by 1.7 is approximately 3.82 (due to recurring decimal, we can estimate).

Multiplication:

9.83 multiplied by 0.2 is 1.966.

Subtraction:

Subtract 3 from 1.966: 1.966 - 3 = -1.034.

Other calculations:

5.1 divided by 1.3 is approximately 3.92.

Subtract 0.2 from 3.92: 3.92 - 0.2 = 3.72.

Since the order of operations involving addition, subtraction, multiplication, and division doesn't affect the result due to parentheses, we can directly add all the remaining numbers:

3.72 - 1.034 + 0.2 = 2.9

However, the answer choices are all whole numbers.

Here's the issue: Dividing 6.5 by 1.7 results in a recurring decimal (approximately 3.8235...). Since the question asks for an answer with a single decimal place and the answer choices are whole numbers, there seems to be an inconsistency in the problem statement.

Considering the calculations and the available answer choices, the closest possible answer is:

B) 2.5

This assumes the division might have been intended as an approximation (rounding down 3.82 to 3.8) before the subtraction.

It's important to note that the given expression might have a slight error due to the inconsistency mentioned above.