a)
Check the picture below.
b)
volume wise, we know the smaller pyramid is 1/8 th of the whole pyramid, so the volume of the whole pyramid must be 8/8 th.
Now, if we take off 1/8 th of the volume of whole pyramid, what the whole pyramid is left with is 7/8 th of its total volume, and that 7/8 th is the truncated part, because the 1/8 we chopped off from it, is the volume of the tiny pyramid atop.
Now, what's the ratio of the tiny pyramid to the truncated bottom?

 
        
             
        
        
        
9514 1404 393
Answer:
   a = 3, b = -8
Step-by-step explanation:
Solving the first equation for y, we get ...
   2y +16 = 6x . . . . . given
   y = 8 +3x . . . . . . . divide by 2
   y = 3x -8 . . . . . . . subtract 8
In order for the system of equations to have infinitely many solutions, the second equation must be the same as this:
   y = ax +b
   a = 3, b = -8
 
        
             
        
        
        
Answer:
31.67
Step-by-step explanation:
12 2/3 X 2 1/2
we begin by converting this into improper fractions,
= 38/3 * 5/2
= 95/3
= 31.67
 
        
             
        
        
        
Answer: 5
Step by step:
(3x+4)/2 = 9.5
3x+4 = 9.5*2
3x+4 = 19
3x = 19 -4
3x = 15
x = 5
        
                    
             
        
        
        
The war had started, i saw the coordinate planes in action, the plan has worked.