Question

Вычислите 1)-5 • 49 • 4; 2)3 1/8 (-у+8) - 4 5/8(у - 16); 3)0,8 • (-125) • 0,5 • (-2); 4)-3,73 • 50 • (-2) • (-0,01); 5)7/8 • (-4,5) • (-1 1/7) • 0,4; 6) -4/9 • (-3/11) • 9/16 • (-22).

Answer 1

1)-5*49= -245  2) 3 1\8 (-у+8)-4 5\8 (у-16)=-3 1/8y+25-4 5/8y+74=
-245*4= -980
Ответ: -980
3) 0,8 • (-125) • 0,5 • (-2)=-100
4)-3,73 • 50 • (-2) • (-0,01)=-3,73
5)7/8 • (-4,5) • (-1 1/7) • 0,4=1,8
6)-4/9 • (-3/11) • 9/16 • (-22)=-1,5

Answer 2

Sure! Let's calculate each expression step by step:

1) -5 + 49 * 4 First, we need to perform the multiplication operation: 49 * 4 = 196 Then, we add -5 to the result: -5 + 196 = 191

Therefore, the answer to the first expression is 191.

2) 3 + 1/8 * (-у + 8) - 4 + 5/8 (у - 16) Let's simplify the expression step by step: -у + 8 can be rewritten as 8 - у 1/8 * (8 - у) can be simplified as (1/8) * 8 - (1/8) * у, which is equal to 1 - (1/8) * у Similarly, 5/8 (у - 16) can be rewritten as (5/8) * у - (5/8) * 16, which is equal to (5/8) * у - 10 Now, let's substitute these values back into the expression: 3 + 1 - (1/8) * у - 4 + (5/8) * у - 10 Combining like terms, we have: (1 - 4) + (3 - 10) + (5/8 - 1/8) * у Simplifying further: -3 + (-7) + (4/8) * у -10 + (1/2) * у Therefore, the answer to the second expression is -10 + (1/2) * у.

3) 0.8 * (-125) * 0.5 * (-2) Multiplying these numbers together, we get: -50 Therefore, the answer to the third expression is -50.

4) -3.73 * 50 * (-2) * (-0.01) Multiplying these numbers together, we get: 3.73 Therefore, the answer to the fourth expression is 3.73.

5) 7/8 * (-4.5) * (-1 + 1/7) * 0.4 Simplifying the expression step by step: -1 + 1/7 can be rewritten as -7/7 + 1/7, which is equal to -6/7 Now, let's substitute these values back into the expression: (7/8) * (-4.5) * (-6/7) * 0.4 Multiplying these numbers together, we get: 2.571428571428571 Therefore, the answer to the fifth expression is 2.571428571428571.

6) -4/9 * (-3/11) * 9/16 * (-22) Multiplying these numbers together, we get: 3.714285714285714 Therefore, the answer to the sixth expression is 3.714285714285714.

In summary, the answers to the given expressions are: 1) 191 2) -10 + (1/2) * у 3) -50 4) 3.73 5) 2.571428571428571 6) 3.714285714285714

I hope this helps! Let me know if you have any further questions.