Answer:
$9.20
Step-by-step explanation:
Hello, I think I can help You with this.
Step 1
find the total price of the sunscreen
Tany paid $10 + 8 % tax, it means she paid 108% of the $10, let's find that value using a rule of three
If
$10⇒100%
$x?⇒108%
the relation is
she paid $10.80
Step 2
find the difference between $20 and $10.80 to know her change
change=$20-$10.80
change=$9.20
have a great day
Argument of Complex number
Z=x+iy , is given by
If, x>0, y>0, Angle lies in first Quadrant.
If, x<0, y>0, Angle lies in Second Quadrant.
If, x<0, y<0, Angle lies in third Quadrant.
If, x>0, y<0, Angle lies in fourth Quadrant.
We have to find those roots among four roots whose argument is between 270° and 360°.So, that root is