Answer:
The sum of the complex numbers is 
.
Explanation:
Let be 
and 
, the sum of the complex number can be found by algebraic means. That is:
1) , Given.
2) 
Definition of addition.
3) 
Commutative and associative properties.
4) 
Definition of addition/Distributive property.
5) 
Definition of addition/Commutative property/Result.
The sum of the complex numbers is .
18 boxes of nails weighs 49.5 kg
So one box weighs 49.5/18=2.75 kg
Therefore each box weighs 2.75 kg
That means each box weighs 2 wholes and 3 by 4
Answer:
the troposphere is the atmosphere
