8.75^8 when you multiply you add your exponents and when you divide you subtract your exponents
        
                    
             
        
        
        
Answer: 2/3
Explanation: the difference between -14 and -10 is 4 and in fractions x/y. so we have 4/y. the difference between -18 and -12 is 6 so we have 4/6 but we can simplify that to 2/3.
        
                    
             
        
        
        
Just multiply the bases and add up the exponents.
9c^6*3c^6 = 27c^6+6 = 27c^12 <- answer
        
             
        
        
        
To find the mean you add up all the numbers then divide the answer by the amount of numbers there are
in this case we add 28+ 18+ 19+ 18+ 17 then divide by 5 
THE MEAN IS 20!!!
-HAVE A NICE DAY!!!
        
                    
             
        
        
        
Answer:
Easy!
Step-by-step explanation:
1) To find the surface area of a regular triangular pyramid, we use the formula SA = A + (3/2)bh, where A = the area of the pyramid's base, b = the base of one of the faces, and h = height of one of the faces. 
or 
2)Multiply the side length of the base by the slant height and divide by two. Then, multiply by 4. This will give you the lateral surface area of the pyramid. Add the base surface area and the lateral surface area.