SOLUTION: If this is a geometric sequence X , 3 ,17 what is the value of X

Algebra ->  Sequences-and-series -> SOLUTION: If this is a geometric sequence X , 3 ,17 what is the value of X      Log On


   

Question 967501: If this is a geometric sequence X , 3 ,17 what is the value of X
Answer by Edwin McCravy(20056) About Me  (Show Source):
You can put this solution on YOUR website!
If this is a geometric sequence X , 3 ,17 what is the value of X?

In a geometric sequence, %0D%0A%0D%0Amatrix%281%2C2%2C2nd%2Cterm%29%2Fmatrix%281%2C2%2C1st%2Cterm%29%22%22=%22%22%0D%0A%0D%0Amatrix%281%2C2%2C3rd%2Cterm%29%2Fmatrix%281%2C2%2C2nd%2Cterm%29%22%22=%22%22matrix%281%2C2%2Ccommon%2Cratio%29

3%2FX%22%22=%22%2217%2F3%22%22=%22%22matrix%281%2C2%2Ccommon%2Cratio%29

Cross-multiply:

17X%22%22=%22%229

X%22%22=%22%229%2F17

Edwin