Answer:
Katie collected 365 cans in the second week.
Step-by-step explanation:
Because Katie collected 470 cans in the first week, and 105 less in the second week, we know to subtract 105 from 470, which gives us 365 cans. 
 
        
             
        
        
        
Solution:
Given the mean and standard deviation;

The z-score formula is;

(a)

(b)

(c)
 
 
        
             
        
        
        
To solve this, it is easiest to set up a proportion, letting x represent the number that we don't know.
2/10 = x/5
Now, we can use cross products to simplify this proportion.  Cross products sets the products of the numerator and denominator of separate fractions equal to one another.  It results in the equation:
(5)(2) = (10)(x)
Let's multiply out these numbers to further simplify the equation.
10 = 10x 
Finally, we have to divide both sides by 10, to get our variable x alone
x = 1
Therefore, 2 tenths is equal to 1 fifth.
        
                    
             
        
        
        
Answer:
Figure it on your own 
Step-by-step explanation:
Because i said so
 
        
             
        
        
        
Answer:
Step-by-step explanation:
|x| = 78.7 is satisfied by both x = 78.7 and x = -78.7.