Question

СРОЧНО МАТЕМАТИКА!!! ​

Answer 1

Ответ:

1. В)
2. Б)
3. А)
4. 3
5. 2,4
6. 1 целая 1/3

Пошаговое объяснение:

▪︎зад 1. В)

$\frac{11}{8} \times \frac{16}{77} = \frac{1 \times 2}{1 \times 7} = \frac{2}{7}$

▪︎зад 2. Б)

$\\ 2 \frac{4}{7} = \frac{2 \times 7 + 4}{7} = \frac{18}{7}$

▪︎зад 3. А)

$\frac{2}{5} \times 2 = \frac{4}{5} = 0.8$

▪︎зад 4.

$2 \frac{4}{10} \times 1 \frac{1}{4} = \frac{24 \times 5}{10 \times 4} = \frac{6}{2} = 3$

▪︎зад 5.

$4 \frac{1}{5} \div 1\frac{3}{4} = \frac{21}{5} \div \frac{7}{4} = \frac{21 \times 4}{5 \times 7} = \frac{3 \times 4}{5} = \frac{12}{5} = \frac{24}{10} = 2.4$

▪︎зад 6.

$2 \frac{2}{3} \div (11 - 3 \frac{3}{8} \times 2 \frac{2}{3} ) = \frac{8}{3} \div (11 - \frac{27 \times 8}{8 \times 3} ) = \frac{8}{3} \div (11 - 9) = \frac{8}{3} \div 2 = \frac{8}{3 \times 2} = \frac{4}{3} = 1 \frac{1}{3}$