Answer:-5/7,-4/7,-3/7,-2/7
Step-by-step explanation:
 
        
             
        
        
        
-0.025 x 40=1 
hope it help
        
             
        
        
        
Answer:
About 91%
Step-by-step explanation:
According to the box plot provided :
Total number of students = 40
Minimum weight = 152 pounds 
Third quartile (Q3) = 245 
The approximate percentage of students that weigh 245 kg or less 
About 10 of the intervals out of the 11 coverage interval of the box plot fall between 152 and 254 ; Hence, 
(10 / 11) * 100
90.90
= about 91 % of the total students weigh 245 kg or less 
 
        
             
        
        
        
The inequality is 

write 7 as 7b/b to have all the expressions in common denominator:






here b=1 is a root and b=0 is not in the domain of the expression, but it still has an effect in the sign of the expression.
the sign table of 

 is :
+++++++[0] --------[1] +++++
this means that for values of b to the left of 0 and to the right of 1, the expression is positive, and for values of b in (0, 1), the expression is negative.
that is 

 for b∈(0, 1)
Answer: (0, 1)