Question

Am nevoie urgent !!! Cine raspunde are COROANA ! (Clasa VI a)

Answer 1

1. A={18, 19, 20, 21}

B={2, 3, 5, 7, 11, 13}

C={29, 31, 33, 35}

D={1, 2}

3. M={1, 3, 5, 7}

{1}

{3}

{5}

{7}

{1, 3}

{1, 5}

{1, 7}

{3, 5}

{3, 7}

{5, 7}

{1, 3, 5}

{1, 3, 7}

{1, 5, 7}

{3, 5, 7}

{1, 3, 5, 7}

4. D36={1, 2, 3, 4, 6, 9, 12, 18, 36}

D40={1, 2, 4, 5, 8, 10, 20, 40}

M7={x|x€N, x</=35}

M7={0, 7, 14, 21, 28, 35}

M4={x|x€N,x</=28}

M4={0, 4, 8, 12, 16, 20, 24, 28}

6. (80, 600)=2³•5=40

80|2•5 80=2⁴•5

8|2

4|2

2|2

1

600|2•5 600=2³•5²•3

60|2•5

6|3

2|2

1

[270, 588]=3³•2²•5•7²=26460

270|2•5 270=3³•2•5

27|3

9|3

3|3

1

588|3 588=3•2²•7²

196|2

98|2

49|7

7|7

1

9. 180°-105°=3°

90°-53°=37°

11. x+2x+30°+3x+40°+2x-20°+x+40°=360°

9x+30°+40°-20°+40°=360°

9x+90°=360°

9x=360°-90°

9x=270 x=270:9 x=30

1=x=30°

2=2x+30°=90°

3=3x+40°=130

4=2x-20°=40°

5=x+40°=70°