Question

Solve linear proportions

Answer 1

x = -31

Explanation:

`(x-1)/(x-9) =(4)/(5)`

`5(x-1)=4(x-9)`

`5x-5=4x-36`

`5x-4x=-36+5`

`x=-31`

Hope this helps

Answer 2

x = -31

Explanation:

5x - 5 = 4x - 36

x = -31

Chlorine has two stable isotopes , Cl-35 and Cl-37 with atomic masses 34.968 u and 36.956 u respectively. If the average atomic mass is 35.453 u.