Answer:
a) True
b) True
c) False
d) True 
Step-by-step explanation:
A discrete variable is the one where the values taken by it are possible to count (usually the values are natural numbers)
On the other side, a continuous variable is the one that has an uncountable number of values. (usually the values are real numbers)
Considering these definitions we get: 
a)The batting average of Joe’s favorite player is a continuous variable: True, this average can take any number among the real numbers.
b) The number of hot dogs that Joe bought is a discrete variable: True, Joe can only buy 1, 2, 3, 4... hot dogs, this set is countable and therefore is a discrete variable.
c) The number of strikeouts in the game is a continuous variable: False, the strikeouts are natural numbers (1, 2, 3, 4...) and therefore are countable and they are a discrete variable.
d) The Quakes standings in the league is a discrete variable: True. The standing of a team in a league is a discrete variable since it can be 1st place, 2nd place... and therefore it's countable. 
 
        
             
        
        
        
Answer:
-2(6-3x)=-12+6x
Step-by-step explanation:
If you do the distributive property first and look at the other side of the = sign they are the same, which means that the answer would be x=x, which isn't a solution.
 
        
             
        
        
        
Answer:
B
Step-by-step explanation:
 
        
                    
             
        
        
        
{20a+15c=3550
{a+c=220
{20a+15c=3550
{15a+15c=3300
5a=250
a=50
There are 50 adult-size T-shirts were sold
        
                    
             
        
        
        
Answer:
EF = 34.3
HD = 53.2
GE = 45.7
GOOD LUCK FOR THE FUTURE! :)