Answer:
V = (2/9)s³
Step-by-step explanation:
The general formula for the volume of a pyramid is:
V = (1/3)(base area)(height).
Here,  the length of a side of the square base is s, and so the area is A = s².  For the height we use (2/3)s.  Then  the volume of the pyramid is:
V = (1/3)(s²)(2/3)s, or V = (2/9)s³
 
        
             
        
        
        
Answer:
Answers below
Step-by-step explanation:
9a. Meg needs to find the Part because she knows the whole is 16 and the percent is 50%
9b. Steve needs to find the percent because he knows the part is 7 and the whole is 35.
12. Find 4% of 40 for the sales tax
0.04*40=1.6
Therefore the sales tax is $1.6
 
        
             
        
        
        
Answer:
63mm 
Step-by-step explanation:
7mm+8mm=15. 
 15×15=225
12×12=144(area equals base times height) add 225-144=81(here we are using the Pythagoras theory) so you search for the square root of 81 which is 9 meaning the height is 9. since we say area is 1/2base times height we should take 1/2 ×9×12=63.if the answer doesn't match with the answer in your book please tell me right away so that I can try another method thank you
 
        
             
        
        
        
I think that x=2 and so does y=2. Hope that answers your question.
        
                    
             
        
        
        
For example
1>x>3
says x is less than 1 and greater than 3