Answer:
144
Step-by-step explanation:
Sum of interior angles: 
180(n-2)
180(10-2)  
1440
Measure of each interior angle:
1440/10=144
 
        
             
        
        
        
D. 6 steps forward and 6 steps backward. 6=6
        
             
        
        
        
Answer:
Don't spin the barrel.
Step-by-step explanation:
Each time you spin the barrel, the probability A of finding a bullet, having two bullets in six chambers is:

For you to get shot in the second try but not the first, the barrel spin would have to stop precisely at one specific chamber: the one right before the bullets, so that probability would be:

which means that this event is half as likely as finding a bullet every time the barrel is spun. Your chances are better if you pull the trigger for the second time without spinning the barrel.
 
        
             
        
        
        
The given inequality is

We need to isolate p, and for that , first we subtract 15 to both sides, that is


Dividing both sides by -30. And on dividing by negative number, the sign of the inequality change . That is

And -10 is less then -2.5 . So the correct option is 
