If the total cost was 21.35, and the poster cost 8.95, then all you need to do is subtract to poster cost from the total cost to find the cost of the pencil.
21.35-8.95= $12.40 
        
                    
             
        
        
        
Answer:

Step-by-step explanation:
To find the volume of the sphere we need to know its radius.
And the radius can be found with the information we have about the surface area.
The formula for the surface area is as follows:

from this formula we clear the radius r:

and we substitute the known value of the surface area, and also the value of  :
:

and now that we know the radius we find the volume:

the volume of the sphere is 
 
        
             
        
        
        
Answer:B 
I think we are in the same class lol
Step-by-step explanation:448 divided by 14= 32
448 divided by 16= 28
B=speed of boat in water
Y= Speed of current 
B+y=32 
B-y=28
32 + 28 =60 
60 divided by 2 = 30
32 -30 =2 
B=30
Y=2 
Add my discord if you need more help Snapple#0141
 
        
             
        
        
        
Answer:
77.6m (3 s.f.)
Step-by-step explanation:
Please see the attached pictures for full solution.
 
        
             
        
        
        
Answer:
5
Step-by-step explanation:
To write it in standard form, we set the equation equal to 0.  To do this, we add 6 to each side:
-6+6 = x² + 4x - 1 + 6
0 = x² + 4x + 5
The related function is
y = x² + 4x + 5
The value of c in this function is 5.