Answer:
90 minutes
Step-by-step explanation:
an hour is 60 minutes+ another 30 minutes= 90
 
        
             
        
        
        
Answer:
y = -2
Step-by-step explanation:
Move all the unknown no. to one side:
4 + 2 = -3y
 -3y = 6
Solve the equation:
 y = -2
 
        
             
        
        
        
Answer:
You can multiply the numerator and denominator by the same number. 
For example, 1x2/4x2=2/8 which is equal to 1/4.
 
        
             
        
        
        
216x-6x=1
210x=1
x= 1/210
x= 0.00476
        
             
        
        
        
Answer:
60000
Step-by-step explanation:
The mean is the average
Add all the salaries together
(30000+30000+40000+40000+40000+50000+190000)
420000
Then divide by the number of number
420000/7
60000