Answer:
The expanded form of the expression  is
 is 
Step-by-step explanation:
We need to write expanded form of the expression 
For expansion we will use distributive property of multiplication over addition

Applying above rule:

So, the expanded form of the expression  is
 is 
 
        
             
        
        
        
First we need to find Mia's speed (v) in km/min
v = distance travelled/ time 
v = 3 km/20 minutes
v = 0.15 km /min
in order to convert the speed into mile/min, we need to use the conversion factor given in which for every kilometer, there is 0.6 miles. 
v = 0.15 km/min *(0.6 miles/ km) 
v =0.09 miles/min
therefore the speed in miles/min is 0.09 miles/min
        
                    
             
        
        
        
I highly believe that the answer is 35
        
             
        
        
        
Answer:
90
Step-by-step explanation: A right triangle will always add up to 180 seeing that the other two add up to 90 the last side is 90