Answer:
-19
Step-by-step explanation:
It's -19 I took the test
Proof in the picture below
 
        
                    
             
        
        
        
250 miles on 8 gallons of fuel
means 250 miles were traveled on 8 gallons, so an average of 250mi/8gal = 31.25 mpg
        
             
        
        
        
(7c-18)-2c>0
group like terms: 7c-2c-18>0
add similar elements: 7c-2c=5c
5c-18+18>0+18
Add 18 to both sides 
5c-18+18>0+18
simplify
5c>18
divide both sides by 5
5c÷5>18/5
simplify 
c>18/5
        
             
        
        
        
Answer:
Propability of getting either sum is 2/9
Step-by-step explanation:
Well, we know that there are 36 total arrangements of the two six sided die. So we have a possibility of 3,4 and 4,3. Likewise, we have a possibility of 5,2 and 2,5. We also have a possibility of 1,6 and 6,1. That takes care of the probability That you get two die that add up to 7. Now for 11, you have 5,6 and 6,5. So since you asked for the probability of getting either or, you add all the probabilities, which is 6/36+2/36=8/36=2/9. So the probability of getting either sum is 2/9.