Answer:
129.8 mins
Step-by-step explanation: 
27.27/21 = 129.8
 
        
             
        
        
        
Planes are undefined terms. They can contain parallels. 
Have a nice day, brainliest would be fantastic
        
             
        
        
        
The snail will reach the top of the wall by day 5.
(3ft-1ft)x = 10ft
2x = 10
2x / 2 = 10/2
x = 5 days.
The snail will reach the top of the wall on the 5th day.
11=                                                 d5
10=                                                        d5
9=                                       d4
8=                                             d4  d5
7=                          d3
6=                                d3  d4
5=             d2
4=                  d2    d3
3=  d1 
2=       d1  d2
1=
0=  d1
        
             
        
        
        
1/5 of an hour is 12 minutes. 60 seconds x 12 minutes= 720 seconds
        
                    
             
        
        
        
The value of x is -2
Step-by-step explanation:
Given that 
6 (2x + 3) - 3(x - 2) = 6
Expand the bracket                     
6 (2x + 3) - 3(x - 2) = 6
12x + 18 - 3x + 6 = 6
Collect like terms
12x - 3x = 6 - 6 - 18
9x = -18
Divide through by 9
9x / 9 = -18 / 9
x = -2
Therefore, the value of x is -2
Learn more about inequality here : brainly.com/question/20252161