Answer:
1.9 x 10=19
4.2x10=42
Now just find out how to multiply 19 -8 times and how to multiply 42, -13 times.
Step-by-step explanation:
hope this helps if not sorry
 
        
                    
             
        
        
        
Answer:
32 gallons of water
Step-by-step explanation:
8 minutes = 480 seconds.
set up a proportion:
1/15=x/480
we have to solve for x:
15x=480
x=32.
Jess uses 32 gallons of water.
 
        
                    
             
        
        
        
we are given 

Firstly, we will factor numerators and denominators

we can see that 
n^2 -6 is factor on both numerator and denominator 
so, it will get cancelled
and n^2 -6 can not be equal to 0
so, one of restriction is 


we can simplify it 

we know that denominator can not be zero 


so, option-B.......Answer
 
        
             
        
        
        
Two sides are the same length one angle measures 90 degrees