SOLUTION: The product of the first three terms of a geometric sequence is 3375 and there sum is 65. Find the first term of the progression

Algebra ->  Sequences-and-series -> SOLUTION: The product of the first three terms of a geometric sequence is 3375 and there sum is 65. Find the first term of the progression       Log On


   



Question 1063842: The product of the first three terms of a geometric sequence is 3375 and there sum is 65. Find the first term of the progression
Answer by Mini-(17) About Me  (Show Source):
You can put this solution on YOUR website!
Answer: 5, 15, 45;
3375 = 3*3*3*5*5*5 = 5 * (3*5) * (3*3*5) = 5 * 15 * 45;
Check: 5*15*45=3375; 5+15+45=65;