The answer is 
First you must change the fractions so that they have like denominators.
 
 
Then you subtract the fractions.

Finally, you need to simplify the answer.

 
        
             
        
        
        
Answer:
d
Step-by-step explanation:
the sun is the primary source
 
        
             
        
        
        
Answer:
68 in.
Step-by-step explanation:
The rectangle is 60in., and you can find the area of a triangle by multiplying the height and the width, then dividing it by 2. The height is four, and the width is 4, 4x4 is 16, divided by 2 is 8.
 
        
             
        
        
        
Divide 315,530,612 by 3,539,225 to get 89 people per square mile (rounded)
        
             
        
        
        
Answer:
A. The answer is 7.4x10^3