9.4/10 is the simplest form
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
Por aspa simple:
x²+x-30=0
X       +6
X        -5
(x+6)(x-5)=0
x+6=0
x=-6
x-5=0
x=5
espero te sirva suerte en tus estudios :D
 
        
             
        
        
        
Answer:
1. 9/10  
2. 14/15
3. 1   1 /6 or 7/6
Step-by-step explanation:
1. Change the 5, the denominator to 10.  8/10 
then add to 1/10  8/10 + 1/10= 9/10
2. Change both denimnators to 15. You will then get 9/15 and 5/15. 
Add them together and get 14/15
3. Change both denominators to 6 and you will get 3/6 and 4/6. 
Add them together to get 7/6.
If you want to make it into a mixed fraction it would be 1 1/6 (as in one and one-sixth)
 
        
                    
             
        
        
        
Answer:
B
Step-by-step explanation:
Let x be the number of packages of paper towels.
Each package of paper towels costs $2.79.
Then x packages of paper towels cost $2.79x.
Hence, a function f(x) is

Practically, you can buy 0 packages, 1 package, 2 packages and so on, only whole numbers of packages, so practical domain is all whole numbers.