Respuesta :

9514 1404 393

Answer:

  (a)  j = -0.45

Step-by-step explanation:

Maybe you want to solve ...

  2.25 - 11j -7.75 +1.5j=0.5j -1

Collecting terms gives ...

  -9.5j -5.5 = 0.5j -1

Adding 9.5j +1 to both sides, we get ...

  -4.5 = 10j

Dividing by 10 gives ...

  j = -0.45