Geometric sequences, Gauss-Jordan, and fraction perations
1. Find the sum of the first five terms of the geometric sequence.
A=3, r=2
2
a. 93 b. 5 c. 1 d. 93
2 2
2. Use the Gauss-Jordan method to solve the system of equations.
x - y + 3z = 16
3x + z = 4
x + 2y + z = -4
a. No solution b. (4, 0, -4) c. (0, -4, 4) d. (4, -4, 0)
3. Perform the indicated operation. Give the answer in lowest terms.
8p - 8 / 10p - 10
P 6p^2
a. 5 b. 80p^2 + 160p +80 c. 24p d. 48p^3 - 48p^2
24p 6p^3 5 10p^2 - 10p
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1. Find the sum of the first five terms of the geometric sequence.
A=3, r=2
2
a. 93 b. 5 c. 1 d. 93
2 2
The general term of the geometric sequence is
, where n = 1, 2, 3, ...
Or
So the first five terms are:
Therefore, the sum of ...
Solution Summary
This shows how to find the sum of the first terms of a given geometric sequence, use Gauss-Jordan to solve an equation, and perform operations on polynomial fractions.