Answer:
Read the explanation!
Step-by-step explanation:
<em>Let the "certain number" be </em> <em>. </em>
<em>. </em>
( is a symbol for multiplication).
 is a symbol for multiplication). 
<em>Create a few equations and expressions:</em>
The sum of 12 and a certain number: 
The product of 3 and the number: 
The sum of 12 and a certain number is equal to the product of 3 and the number:
 =
 = 
Solve!
12=3x-x
12=2x
x=6
 
 
        
             
        
        
        
The only way to do this is when there is a decimal.
        
                    
             
        
        
        
Answer: a)  b)
 b)  c)
 c) 
Step-by-step explanation:
Since we have given that
There are green and yellow candies in each bag.
Bag A: Two thirds of the candies are yellow. What portion of the candies is green?
Part of yellow candies in bag A = 
Part of green candies in bag A would be 

Bag B: 29 % of the candies are yellow. What portion of the candies is green?
Percentage of candies are yellow = 29%
Portion of candies are green is given by

Bag C: 4 out of every 9 candies are yellow. What portion of the candies is green?
Portion of yellow candies = 
Portion of green candies would be

Hence, a)  b)
 b)  c)
 c) 
 
        
             
        
        
        
We are given two points: (-1, -1) and (1, -4). Slope is calculated as the change in y over the change in x, or rise over run. 
The change in y is the difference of the two y coordinates (it doesn't matter the order): -1 - (-4) = 3
The change in x is the difference of the two x coordinates (this order depends on the order that you subtracted the y coordinates; they must be the same order): -1 - 1 = -2.
So, the slope is 3/-2 
 
        
                    
             
        
        
        
X-3=-6
if you take away 3 from a number, you will get -6
x=-3