Question

-3.8*1.5; 1 1/14*2 1./3; -433,62:(-5.4); 1 1/7:(-2 2/7)

Answer 1

-3.8*1.5 = -(3,8*1,5) = -5,7


1 1/14*2 1./3 = 1/7*1/3 = 1/21 ≈ 0.047

-433,62:(-5.4) = 433.62:5,4 = 80,3

 1 1/7:(-2 2/7) = 1/7:(-4/7) = -1/7*7/4 = -1/4 = -0.25

Answer 2

Let's calculate the given expressions step by step:

1. -3.8 * 1.5:

   • Result: -5.7

2. 1 1/14 * 2 1/3:

   • First, convert the mixed fractions to improper fractions: 1 1/14 = (14 + 1)/14 = 15/14 2 1/3 = (3*2 + 1)/3 = 7/3
   • Now, multiply the two fractions: (15/14) * (7/3) = (15 * 7) / (14 * 3) = 105 / 42
   • Reduce the fraction to its simplest form: 105 / 42 = 5/2
   • Result: 5/2 or 2.5

3. -433.62 / (-5.4):

   • Result: 80.2574074074 (rounded to 12 decimal places)

4. 1 1/7 / (-2 2/7):

   • First, convert the mixed fractions to improper fractions: 1 1/7 = (7 + 1)/7 = 8/7 -2 2/7 = (-7*2 - 2)/7 = -16/7
   • Now, divide the two fractions: (8/7) / (-16/7) = (8/7) * (-7/16)
   • The 7s cancel out: (8/1) * (-1/16) = -8/16
   • Reduce the fraction to its simplest form: -8/16 = -1/2
   • Result: -1/2 or -0.5

Therefore, the results of the given expressions are:

1. -3.8 * 1.5 = -5.7
2. 1 1/14 * 2 1/3 = 2.5
3. -433.62 / (-5.4) = 80.2574074074
4. 1 1/7 / (-2 2/7) = -1/2 or -0.5