Question

me ajudem gente por favor​

Answer 1

Resposta:

6.

a) 2/3 + (-1/2)^2

2/3 - 1/4

8/12 - 3/12

5/12

b) (-2/3)^3 + 1

-8/27 + 1

19/27

c) (3/5)^2 + (-1/2)^2

9/25 + 1/4

36/100 + 25/100

61/100

d) 5 - 1/2 + (+1/2)^2

5 - 1/2 + 1/4

5 - 2/4 + 1/4

5 - 1/4

19/4

7.

(-1/2)^0 + (-1/2)^1 + (-1/2)^2 + (-1/2)^3 + (-1/2)^4

1 + -1/2 + 1/4 + -1/8 + 1/16

1 - 1/2 + 1/4 - 1/8 + 1/16

1 - 2/4 + 1/4 - 1/8 + 1/16

1 - 1/4 - 1/8 + 1/16

1 - 2/8 - 1/8 + 1/16

1 - 3/8 + 1/16

1 - 6/16 + 1/16

1 - 5/16

11/16

8.2/5

a) (-2 - 5/3)^2

(-7/3)^2

49/3

b) 1/2 - (-1)^3 - (-1)^4

1/2 - (-1) - (1)

1/2 + 1 - 1

1/2

c) 5^0 - (-1) - (-1/2)^2

1 + 1 - (1/4)

2 + (1/4)

2 + 1/4

9/4

d) [2/5 + 5 . (-2/25)]^2

[2/5 + -10/25]^2

[2/5 - 10/25]^2

[10/25 - 10/25]^2

[0]^2

0

9.

a) 3^2. + 3^-2

9 + (3/1)^-2

9 + (1/3)^3

9 + (1/37)

9 + 1/37

334/37

b) 2^0 + 2^1 + 2^-1

1 + 2 + (2/1)^-1

3 + (1/2)^1

3 + (1/2)

3 + 1/2

7/2

10. (1 1/3)^3 - (-1/3)^3 + (3/2)^-2

(4/3)^3 - (-1/27) + (2/3)^2

(64/27) + 1/27 + (4/9)

64/27 + 1/27 + 4/9

65/27 + 4/9

65/27 + 12/27

77/27

11.

Salada = 3

Carne = 3

Sobremesa = 3

Sa1 + c1 + so1

Sa1 + c1 + so2

Sa1 + c1 + so3

Sa1 + c2 + so1

Sa1 + c2 + so2

Sa1 + c2 + so3

Sa1 + c3 + so1

Sa1 + c3 + so2

Sa1 + c3 + so3

Sa2 + c1 + so1

Sa2 + c1 + so2

Sa2 + c1 + so3

Sa2 + c2 + so1

Sa2 + c2 + so2

Sa2 + c2 + so3

Sa2 + c3 + so1

Sa2 + c3 + so2

Sa2 + c3 + so3

Sa3 + c1 + so1

Sa3 + c1 + so2

Sa3 + c1 + so3

Sa3 + c2 + so1

Sa3 + c2 + so2

Sa3 + c2 + so3

Sa3 + c3 + so1

Sa3 + c3 + so2

Sa3 + c3 + so3

3.3.3 = 27

27 refeições diferentes.