Question

12) 0,408 : x = 1,7; 13) (x + 9,14): 7,2 = 5;14) 2,2 - x : 0,3 = 0,13;15) 5,6 : (x + 1,6) = 0,08;16) 5,6 : x + 0,16 = 0,3;17) 4,13 - 1,7x = 4,028;18) 64 : (2,4y + 19,04) = 3,2.​

Answer 1

Ответ:

все должно быть правильно

Answer 2

Let's solve these equations step by step:

12. 0.408 : x = 1.7

To solve for x, you can multiply both sides of the equation by x:

0.408 * x = 1.7

Now, divide both sides by 0.408 to isolate x:

x = 1.7 / 0.408 ≈ 4.1667

13. (x + 9.14) / 7.2 = 5

To solve for x, first, multiply both sides by 7.2 to isolate the (x + 9.14) term:

x + 9.14 = 5 * 7.2

x + 9.14 = 36

Now, subtract 9.14 from both sides to solve for x:

x = 36 - 9.14 ≈ 26.86

14. 2.2 - x / 0.3 = 0.13

To solve for x, first, subtract 2.2 from both sides:

-x / 0.3 = 0.13 - 2.2

-x / 0.3 = -2.07

Now, multiply both sides by 0.3 to isolate -x:

-x = -2.07 * 0.3

-x = -0.621

Finally, multiply both sides by -1 to solve for x:

x = 0.621

15. 5.6 / (x + 1.6) = 0.08

To solve for x, first, multiply both sides by (x + 1.6) to isolate the 5.6:

5.6 = 0.08 * (x + 1.6)

Now, divide both sides by 0.08:

5.6 / 0.08 = x + 1.6

70 = x + 1.6

Subtract 1.6 from both sides to solve for x:

x = 70 - 1.6 = 68.4

16. 5.6 / (x + 0.16) = 0.3

To solve for x, first, multiply both sides by (x + 0.16) to isolate the 5.6:

5.6 = 0.3 * (x + 0.16)

Now, divide both sides by 0.3:

5.6 / 0.3 = x + 0.16

18.67 = x + 0.16

Subtract 0.16 from both sides to solve for x:

x = 18.67 - 0.16 ≈ 18.51

17. 4.13 - 1.7x = 4.028

To solve for x, first, subtract 4.13 from both sides:

-1.7x = 4.028 - 4.13

-1.7x = -0.102

Now, divide both sides by -1.7 to isolate x:

x = -0.102 / -1.7 ≈ 0.06

18. 64 / (2.4y + 19.04) = 3.2

To solve for y, first, multiply both sides by (2.4y + 19.04) to isolate the 64:

64 = 3.2 * (2.4y + 19.04)

Now, divide both sides by 3.2:

64 / 3.2 = 2.4y + 19.04

20 = 2.4y + 19.04

Subtract 19.04 from both sides to solve for y:

2.96 = 2.4y

Now, divide both sides by 2.4 to isolate y:

y = 2.96 / 2.4 ≈ 1.2333