Answer:
Step-by-step explanation:
the first one
 
        
                    
             
        
        
        
Answer:
3/4(-10+2+2/5)
answer -5.7
Step-by-step explanation:
-
 
        
             
        
        
        
Answer: 0.
Step-by-step explanation:
 
        
                    
             
        
        
        
There is more than one way to solve this.
250° : 50min.
You can divide each side by ten for 5 minutes. 
50/10 = 5 minutes
250/10 = 25°
        
             
        
        
        
Answer:
B. No

Step-by-step explanation:
-A right angle triangle has two complimentary acute angles and one right angle.
- is usually one of the acute angles and is equivalent to 90º minus it's complimentary acute angle.
 is usually one of the acute angles and is equivalent to 90º minus it's complimentary acute angle.
-Complimentary angles add up to 90º.
#For complimentary angles:

The two acute angles cannot have the same Cosine value.
Hence, she's not correct.