Determine whether the expression is a partial sum of an arithmetic or geometric sequence. Then find the sum. : 5+25+125+...3125
(a) 19530
(b) 7810
(c) 3125
(d) 3280
(e) 3905
(e) 3905
Mathematics
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Express the function as a trigonometric function of x.cos 4x
A. cos3x - 3 sin2x cos x B. 3 sin x - 4 sin3x C. cos4x - 6 sin2x cos2x + sin4x D. 4 sin x cos3x - 4 sin3x cos x
Mathematics
Simplify the following expression by first substituting values from the table of exact values and then simplifying the resulting expression.
Table of Exact Values
xsin xcos x0°0130°
45°
60°
90°10?
?
A. 
B. 
C. 1
D. 0
E. 
Mathematics
Solve the system of equations by Gaussian elimination.
A. {(2, 1, 5)} B. {(5, 1, 2)} C. {(5, 2, 1)} D. ?
Mathematics
Graph the inequality.y ? 5 - 2x
A. 
B. 
C. 
D. 
Mathematics