There are two bags: a bag with 4 blue marbles and 6 black marbles and another one containing 6 blue marbles and <span>6 black marbles. the probability of getting a blue marble in the first bag is 6/10 or 3/5 while that on the second bag is 6/12 or 1/2. Hence the total probability of getting two marbles is c. 3/10. </span>
        
             
        
        
        
Your answer should be 486 inches, you do 9x9 to find the area of one of the faces, and because there is 6 faces, you multiply that answer (81) to get 486
        
                    
             
        
        
        

Substitue 2x for y in the second equation:

Rearrange to 

 form:

Factor:

Zeros are 

 and 

To find y-coordinates of pts of intersection, plug these x-values into first equation to get 

 and 
 
 
        
             
        
        
        
315 peanuts/ 15 min= 21 peanuts/min.
Jack sells 21 peanuts in 1 minute.
Hope this helps~
        
             
        
        
        
See picture below for a geometric view.
Let x = height of building
We use basic trigonometry to find x.
The tangent function = opposite side of right triangle OVER adjacent side of right triangle.
tan(2°) = x/1
Solve for x.
After multiplying both sides by 1 (here 1 represents 1 mile), we get 
tan(2°) = x. 
We now use the calculator to find x.
In fact, you can take it from here. Use your calculator.