Posted by HanuMath25/11 on Sunday, November 25, 2012 at 5:29pm.
The third term of a geometric series is 24 and the fourth term is 36. Determine the sum of the first 10 terms. Express your answers as an exact fraction.

Pre Calculus  Steve, Sunday, November 25, 2012 at 8:36pm
T4 = T3*r, so r = 36/24 = 3/2
T3 = ar^2, so 24 = a(9/4), so a=32/3
S10 = 32/3 * (1(3/2)^10)/(1  3/2) = 58025/48
seems clumsy, so better check my math.
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