Question

Помогите! а) 2 7/9 : (-1 2/3) б) (-54,6) : (-0,06) в) -22/75 : 0,33 Срочно!!!

Answer 1

Ответ:

а) -1 2/3

б) 910

в) -8/9

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Пошаговое объяснение:

а)

$2 \frac{7}{9} \div ( - 1 \frac{2}{3} ) = \frac{25}{9} \div ( - \frac{5}{3} ) = - \frac{25}{9} \times \frac{3}{5} = - \frac{5}{3} = - 1 \frac{2}{3}$

б)

$( - 54.6) \div ( - 0.06) = \frac{546}{10} \div \frac{6}{100} = \frac{546}{10} \times \frac{100}{6} = 91 \times 10 = 910$

в)

$- \frac{22}{75} \div 0.33 = - \frac{22}{75} \div \frac{33}{100} = - \frac{22}{75} \times \frac{100}{33} = - \frac{2 \times 4}{3 \times 3} = - \frac{8}{9}$

Answer 2

Calculations

a) 2 7/9 : (-1 2/3)

To solve this division, we can convert the mixed numbers to improper fractions and then perform the division.

2 7/9 can be written as (2*9 + 7)/9 = 25/9

-1 2/3 can be written as (-1*3 + 2)/3 = -5/3

So, 2 7/9 : (-1 2/3) = 25/9 : (-5/3)

Now, dividing by a fraction is the same as multiplying by its reciprocal. Therefore, 25/9 : (-5/3) = 25/9 * (-3/5) = -75/45 = -5/3 b) (-54,6) : (-0,06)

To solve this division, we simply divide -54.6 by -0.06.

(-54.6) : (-0.06) = 54.6 / 0.06 = 910 c) -22/75 : 0,33

To solve this division, we divide -22/75 by 0.33.

-22/75 : 0.33 ≈ -0.2933 : 0.33 = -0.8888

Conclusion

a) 2 7/9 : (-1 2/3) = -5/3 b) (-54,6) : (-0,06) = 910 c) -22/75 : 0,33 ≈ -0.8888