Question

Помогите пожалуйста!! Прошууу

Answer 1

Ответ:

Пошаговое объяснение:

5.

1. 5/6 + 2. 7/10 + 1/5 =

1. 25/30 + 2. 21/30 + 6/30 = 3. 52/30 = 4. 22/30 = 4. 11/15 (м) - периметр ∆

Ответ: 4. 11/15 м

6

1) 7 - 2/3 = 6. 3/3 - 2/3 = 6. 1/3

2) 1. 3/4 - 1/6 = 1. 9/12 - 2/12 = 1. 7/12

3) 1. 1/5 + 2. 2/3 + 1/6 =

1. 6/30 + 2. 20/30 + 5/30 = 3. 31/30 = 4. 1/30

4) 6. 1/3 : 1. 7/12 * 4. 1/30 = 19/3 : 19/12 * 121/30 =

19/3 * 12/19 * 121/30 =

12/3 * 121/30 = 4 * 121/30 = 2 * 121/15 = 242/15 = 16. 2/15

Answer 2

$P=a+b+c=1\frac{5}{6}+2\frac{7}{10}+\frac{1}{5}=\frac{11}{6}+\frac{27}{10}+\frac{1}{5}=\frac{55}{30}+\frac{81}{30}+\frac{6}{30}=\frac{142}{30}=4\frac{22}{30}=4\frac{11}{15}$ м

2.

$(7-\frac{2}{3}):(1\frac{3}{4}-\frac{1}{6})*(1\frac{1}{5}+2\frac{2}{3}+\frac{1}{6})$

$(\frac{7}{1}-\frac{2}{3}):(\frac{7}{4}-\frac{1}{6})*(\frac{6}{5}+\frac{8}{3}+\frac{1}{6})$

$(\frac{21}{3}-\frac{2}{3}):(\frac{21}{12}-\frac{2}{12})*(\frac{36}{30}+\frac{80}{30}+\frac{5}{30})$

$\frac{19}{3}:\frac{19}{12}*\frac{121}{30}$

$\frac{19}{3}*\frac{12}{19}*\frac{121}{30}=4*\frac{121}{30}=\frac{484}{30}=16\frac{4}{30}=16\frac{2}{15}$