Question

1) (2,43 + 4,15)* 1,7; 2) (12,49 - 3,57): 0,4;3) (4.17 - 3,8)* (10,1 - 8,1);4) (15,7 + 14,9) : (2,91 - 1,21).​

Answer 1

1) 11, 186
2) 22,3
3) 0,185
4) 18

Answer 2

Let's calculate the results for each of these expressions:

1. (2.43 + 4.15) * 1.7 = (6.58) * 1.7 ≈ 11.186

2. (12.49 - 3.57) / 0.4 = 8.92 / 0.4 ≈ 22.3

3. (4.17 - 3.8) * (10.1 - 8.1) = 0.37 * 2 = 0.74

4. (15.7 + 14.9) / (2.91 - 1.21) = 30.6 / 1.7 ≈ 18

So, the results are as follows:

1. ≈ 11.186
2. ≈ 22.3
3. = 0.74
4. ≈ 18