Answer:
The answer is c definitely
 
        
                    
             
        
        
        
Answer:
1.5
Step-by-step explanation:
225° bisects Q III
315° bisects Q IV
-270° = 90°
405° = 45° bisects Q I
cos(225) sin(315) + sin( –270) tan(405) = ?
       (-½√2)(-½√2) + 1(1) = ?
                           0.5 + 1 = 1.5
 
        
                    
             
        
        
        
Answer:
I think that C) and D) 
Step-by-step explanation:
I think this because if you look at 3.5 secounds it came down and after 1.75 secounds the ball hit the ground. A) wouldn't be because it came down at 3.5 secounds not coming up. B) wouldn't be because the ball droped after 1.75 secounds not come up. 
 
        
             
        
        
        
Answer:
1/2
Step-by-step explanation:
3/5 - 1/10
6/10 - 1/10 = 5/10 = 1/2
 
        
             
        
        
        
The sum of -2.5, -3 and 6.7 is 1.2