Answer:
y=-3/11x+67/11
Step-by-step explanation:
y-8=-5-8/4--7(x--7)
y-8=-3/11(x+7)
11y-88=-3x-21
11y=-3x-21+88
11y=-3x+67
y=-3/11x+67/11
 
        
                    
             
        
        
        
Answer:
a)  
And we can find this probability with the complement rule:
 
b) 
And if we use the z score we got:
 
 
Step-by-step explanation:
Let X the random variable that represent the lengths of a population, and for this case we know the distribution for X is given by:
 
  
Where  and
 and  
Part a
We are interested on this probability
 
And we can use the z score formula given by:
 
And using this formula we got:
 
And we can find this probability with the complement rule:
 
Part b
For this case we select a sample of n =44 and the new z score formula is given by:

And if we find the z score we got:

And if we use the z score we got:
 
 
 
        
             
        
        
        
Answer:
the reciprocal of 2/7 is 7/2. you just switch the numbers 
 
        
             
        
        
        
Answer:
4.  9   
5.    5x
Step-by-step explanation:
its an isocoles
 
        
             
        
        
        
First find average
(5+5+5+5+7+9)/6=6
now see how much they each are differnt 
5 to 6 is 1
5 to 6 is 1
5 to 6 is 1
5 to 6 is 1
7 to 6 is 1
9 to 6 is 3
average those
(1+1+1+1+1+3)/6=8/6=4/3=1.333
answer is 1.33