Question

Chỉ giúp

Answer 1

`d)` 

`A(x) = -3/4x + 12`

` -3/4x + 12 = 0`

` -3/4x = -12`

` x = -12 : ` \(\dfrac{-3}{4}\)

` x = 16`

`Vậy....`

 

`B(y) = 2y + 18`

`2y + 18 =0`

`2y = -18`

`y = -18 :2`

` y = -9`

`Vậy....`

 

`C(t) = 2 - 5t`

`2-5t = 0`

` 5t = 2`

`t = 2 :5`

`t = 2/5`

`Vậy....`