Question

- 0,168 ÷ 1,6 + 0,2 × (0,45 - 4/5) = 1) 2) 3) 4)

Answer 1

-0,168 : 1,6 + 0,2 · (0,45 - 4/5) = -0,175

1) 4/5 = 8/10 = 0,8 - в десятичных дробях

0,45 - 0,8 = -0,35

2) -0,168 : 1,6 = -0,105

3) 0,2 · (-0,35) = -0,07

4) -0,105 + (-0,07) = -(0,105 + 0,07) = -0,175

Ответ: (-0,175).

Answer 2

Let's solve the expression step by step:

1. Calculate the subtraction inside the parentheses: 0.45 - 4/5 = 0.45 - 0.8 = -0.35

2. Multiply 0.2 by the result from step 1: 0.2 * (-0.35) = -0.07

3. Now, we have the expression as follows: -0.168 ÷ 1.6 + (-0.07)

4. Divide -0.168 by 1.6: -0.168 ÷ 1.6 = -0.105

5. Finally, add -0.07 to the result from step 4: -0.105 + (-0.07) = -0.175

So, the answer is -0.175.

The correct option is: 3) -0.175