Question

1) (0,24-0,008 x (-2,3)):(-0,4)= 2) 9,8-4,8:(-0,65-0,15)= 3) (-7,2+4,4) ⋅ (-0,5)-3,9+0,4= 4) (-0,42) : (1,75-3,5 ⋅ (-0,1)) : (-0,05)=

Answer 1

1) -0,1784.....................................................

Answer 2

1) (0,24-0,008 x (-2,3)):(-0,4)= -0,646
     0,008 × (-2,3)=-0,0184
     0,24-(-0,0184)=0,24+0,0184=0,2584
     0,2584 : (-0,4)= - 0,646

2) 9,8-4,8:(-0,65-0,15)=15,8
   - 0,65-0,15= -0,8
    4,8 ÷ (-0,8)= -6
    9,8- (-6)=9,8+6=15,8

3) (-7,2+4,4) ⋅ (-0,5)-3,9+0,4= -2,1
    -7,2+4,4= -2,8
    -2,8 × (-0,5)=1,4
     1,4-3,9+0,4= -2,1

4) (-0,42) : (1,75-3,5 ⋅ (-0,1)) : (-0,05)=4
    3,5 × (-0,1)= -0,35
    1,75- (-0,35)= 1,75+0,35=2,1
    -0,42 ÷2,1= - 0,2
    -0,2 ÷ (-0,05)=4

Answer 3

Let's solve each of these mathematical expressions step by step:

1. (0.24 - 0.008 * (-2.3)) / (-0.4)

First, calculate the value inside the parentheses: 0.24 - 0.008 * (-2.3) = 0.24 + 0.0184 = 0.2584

Now, divide by -0.4: 0.2584 / (-0.4) = -0.646

2. 9.8 - 4.8 / (-0.65 - 0.15)

First, calculate the value inside the parentheses: -0.65 - 0.15 = -0.8

Now, divide 4.8 by -0.8: 4.8 / (-0.8) = -6

Now, subtract -6 from 9.8: 9.8 - (-6) = 9.8 + 6 = 15.8

3. (-7.2 + 4.4) * (-0.5) - 3.9 + 0.4

First, calculate the value inside the first set of parentheses: -7.2 + 4.4 = -2.8

Now, multiply by -0.5: -2.8 * (-0.5) = 1.4

Now, subtract 3.9 and add 0.4: 1.4 - 3.9 + 0.4 = -2.5

4. (-0.42) / (1.75 - 3.5 * (-0.1)) / (-0.05)

First, calculate the value inside the innermost set of parentheses: 3.5 * (-0.1) = -0.35

Now, subtract that value from 1.75: 1.75 - (-0.35) = 2.1

Now, divide -0.42 by 2.1: -0.42 / 2.1 = -0.2

Finally, divide the result by -0.05: -0.2 / (-0.05) = 4