Question

Cate puteti va roggggg dau ce vreti voi

Answer 1

Răspuns:

Explicație pas cu pas:

1.

12 - 4 - 11 + 9 - 5 = 1

2.

5(2x - 4) = 4*40

10x - 20 = 160

10 x = 160 + 20 = 180

x = 180 : 10 = 18

3.

120*p/100 = 6

p = 600/120 = 5

4.

a = 3b/5

3a - b = 9b/5 - 5b/5 = 4b/5

2a - b = 6b/5 - 5b/5 = b/5

raportul devine 4b/5 : b/5 = 4b/5*5/b = 4

5.

2x/3 = 3/4 - 1/2 = 3/4 - 2/4 = 1/4

x = 3/8

6.

2x ≤ 8

x ≤ 4

A = {1, 2, 3, 4}

B = {0, 2, 4, 6}

A ∩ B = {2, 4}

7.

(2x + 1)/6 = (5x - 3)/4

4(2x + 1) = 6(5x - 3)

8x + 4 = 30x - 18

30x - 8x = 18 + 4

22x = 22

x = 22 : 22 = 1

8.

180° - 36°33'18'' = 179°59'60'' - 36°33'18'' = 143°26'42''

9.

Total bile = 8 + 3 = 11

P = 3/11