Question

Помогите кто хорошо разбирается по математике! Решительно уравнения : 1) 3,6 : 2,4 = 9 : x; 2) 2,8 : 0,7 = x : 8; 3) 2,7 : x = 1,2 : 0,8. Буду очень очень очень благодарна!

Answer 1

Я думаю,деление можно заменить дробью,и тогда получится пропорция:
1) 3,6/2,4=9/х
Х=(2,4*9)/3,6=21,6/3,6=6
2) 2,8/0,7=х/8
Х=(2,8*8)/0,7=32
3) 2,7/х=12/0,8
Х=(2,7*0,8)/12=0,18

Answer 2

Solving Equations

Sure, I'd be happy to help with these equations!

1) 3.6 : 2.4 = 9 : x To solve for x, we can use the concept of cross multiplication. This means multiplying the extremes and means of the proportion. The equation can be solved as follows: - 3.6 * x = 2.4 * 9 - 3.6x = 21.6 - x = 21.6 / 3.6 - x = 6

2) 2.8 : 0.7 = x : 8 Similar to the first equation, we can use cross multiplication to solve for x: - 2.8 * 8 = 0.7 * x - 22.4 = 0.7x - x = 22.4 / 0.7 - x = 32

3) 2.7 : x = 1.2 : 0.8 For this equation, we can again use cross multiplication to solve for x: - 2.7 * 0.8 = x * 1.2 - 2.16 = 1.2x - x = 2.16 / 1.2 - x = 1.8

I hope this helps! Let me know if you have any other questions.