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What is the integer value of x in the arithmetic sequence 3^2, x, 3^4*3^2?

 Apr 12, 2022
 #1
avatar+122390 
+1

3^2 , x, 3^4*3^2   =

 

3^2 , x  , 3^6

 

Since this is arithmetic, the difference between successive terms is  constant....so.....

 

x - 3^2  =  3^6 - x    simplify

 

2x =  3^6 + 3^2

 

x  =  [ 3^6 + 3^2 ] / 2

 

x = 738 / 2

 

x = 369 

 

 

cool cool cool

 Apr 12, 2022
 #2
avatar+122 
-2

Yessssssss right

 Apr 12, 2022
 #3
avatar+122 
-2

been gone

 Apr 12, 2022
 #4
avatar+122 
-3

That RIGHTTTT

 Apr 12, 2022

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