Answer:
10.98 days is 10.98/3.66 = 3 half life periods and half of the mass is lost at each half life. You can do this in your head. I have!!
Step-by-step explanation:
Each washing machine is $390 and the first washing machine is better because its marked down all the way in stead of a discount, meaning that the tax will be lower (I think)

where A is area
a is side a lets say its 8cm
b is side b lets say its 7 cm
theta is 28
I hope this helps you
12=3.4=3.2^2
In 864 it is a tenth as large... Hope that helped lol i'm not completely sure. I did it in my head.