Answer:
True
Step-by-step explanation:
If ab < 0, then ab = negative #. 
In order for ab to be a negative #, one of them has to be negative while the other one needs to be positive. 
Example:
a = -2, b = 1
ab < 0
(-2)(1) < 0
-2 < 0, TRUE
a < 0
-2 < 0, TRUE
b > 0
1 > 0, TRUE
If I switch a = -2 to 1 and b = 1 to -2, a > 0 and b < 0 is true too.
 
        
             
        
        
        
Answer:
i didn't understand in third line mate
 
        
             
        
        
        
Answer:
the volume of a cylinder is pi r^2 h = 3.14.(3.5)^2. 5.5=211.55 cubic foot 
211.55 x 7.48052 =1583.36 gallons. 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
plzzzzz
Step-by-step explanation:
lolzzzz