Answer:
135°
Step-by-step explanation:
Using S = rA, where S is arc length, r is radius and A is angle(in radians). 
Comparing: 
=> 12 = 16A 
=> 12/16 = A 
=> 3/4 = A 
Required radian is 3/4 which is 3/4 * 180° = 135°
 
        
             
        
        
        
Do you know how to do it on your calculator?
        
             
        
        
        
Answer:
The speed from the observer is 8 mph.
Step-by-step explanation:
When the boat is going downstream with full force, its speed will be the one the oarsman can row on still water added by the flow of the river. In this case he can row the boat at speed of 3 mph, while the stream is 5 mph, so the speed from the observer standpoint is:

The speed from the observer is 8 mph.
 
        
             
        
        
        
Answer:
50%
Step-by-step explanation:
sorry I don't have an explanation...
 
        
                    
             
        
        
        
Answer: Coffiecent is 26 
 
Step-by-step explanation
 the travel from Sun to Jupiter  it will take more than 43 minutes . depending on whether are on the same side of the Sun as well as Jupiter  or on the other side
 another point always sun and Jupiter are not nearest so only changes in the  light travels