Answer:
8.66
Step-by-step explanation:
 
        
             
        
        
        
Answer:
m=4 because 2 times 4 is 8 and n= 8 because 2 times 8 is 16
Step-by-step explanation:
 
        
                    
             
        
        
        
I would like to say that it was an absolute honor helping you!!
        
             
        
        
        
3x+2 mulitiply by 2. you will get 6x+4 now put 10x-12 like so 6x+4=10x-12. then use like terms and subtract 6x from 10x. you will get 4x-12=4. then add 12 to cancel out then divide 16 by 4 and then x=4 then plug in 4 to replace x in 3x+2.
The answer is 14
        
                    
             
        
        
        
(3x + 5)° + (10x - 7)° = 180°
13x + (-2) = 180
13x = 180 + 2
13x = 182
x = 14
∠QRT = 3 * 14 + 5 = 42 + 5 = 47°
∠TRS = 10 * 14 - 7 = 140 - 7 = 133°