9) 0.31
10) (7x10^6)-(3x10^3)
7000000-3000=6997000
6.997x10^6
Hope this helps :)
        
             
        
        
        
Answer:
Step-by-step explanation:
If the center of the circle is at the origin, the general formula for the circle is
x^2 + y^2 = r^2.
Since r  = 2 units in this particular problem, the equation of the circle is:
x^2 + y^2 = 2^2,  or  x^2 + y^2 = 4
 
        
             
        
        
        
Answer:0=12
Step-by-step explanation:
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation:
 3x-7=3x-5
Combine like terms:
3x-3x=7+5
0=12
 
        
                    
             
        
        
        
Answer:
B
Step-by-step explanation: