Question

2/7:5/11= 2/5:3/4= 4/7:13/5= 6/7:19/5=

Answer 1

Ответ:

Пошаговое объяснение:

2/7:5/11=2/7*11/5=22/35

2/5:3/4=2/5*4/3=8/15

4/7:13/5=4/7*5/13=20/91

6/7:19/5=6/7*5/19=30/133

Answer 2

Ответ:

1)

$\frac{2}{7} \div \frac{5}{11} = \frac{2}{7} \times \frac{11}{5} = \frac{2 \times 11}{5 \times 7} = \frac{22}{35}$

2)

$\frac{2}{5} \div \frac{3}{4} = \frac{2}{5} \times \frac{4}{3} = \frac{2 \times 4}{5 \times 3} = \frac{8}{15}$

3)

$\frac{4}{7} \div \frac{13}{5} = \frac{4}{7} \times \frac{5}{13} = \frac{4 \times 5}{7 \times 13} = \frac{20}{91}$

4)

$\frac{6}{7} \div \frac{19}{5} = \frac{6}{7} \times \frac{5}{19} = \frac{6 \times 5}{19 \times 7} = \frac{30}{133}$

Answer 3

To compare these ratios, you can cross-multiply and simplify each one. Here are the calculations for each of the given ratios:

1. 2/7 : 5/11

Cross-multiply: (2 * 11) : (7 * 5) 22 : 35

2. 2/5 : 3/4

Cross-multiply: (2 * 4) : (5 * 3) 8 : 15

3. 4/7 : 13/5

Cross-multiply: (4 * 5) : (7 * 13) 20 : 91

4. 6/7 : 19/5

Cross-multiply: (6 * 5) : (7 * 19) 30 : 133

So, the simplified ratios are:

1. 2/7 : 5/11 simplifies to 22/35
2. 2/5 : 3/4 simplifies to 8/15
3. 4/7 : 13/5 simplifies to 20/91
4. 6/7 : 19/5 simplifies to 30/133