Use a graphing utility to find the sum of the geometric sequence. Round answer to two decimal places, if necessary.
A. -18.2
B. -17
C. -17.4
D. -15.6
Answer: B
Mathematics
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Solve the inequality. Graph the solution set and write it in interval notation.x + 5 < 12
A. (-?, 17)
B. (-?, 7)
C. (7, ?)
D. (-?, 17]
Mathematics
Multiply.(x + 9)(x - 9)
A. x2 - 81 B. x2 - 18x - 81 C. x2 - 18 D. x2 + 18x - 81
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Find the center and vertices of the ellipse.
?
?
A. center: (9, 6) vertices: (-9, -6), (9, 6) B. center: (0, 0) vertices: (0, -9), (0, 9) C. center: (9, 0) vertices: (0, -6), (0, 6) D. center: (0, 0) vertices: (-6, 0), (6, 0) E. center: (0, 0) vertices: (-9, 0), (9, 0)
Mathematics
For the given probability density function, over the stated interval, find the requested value.f(x) = 
, over the interval [2,8]. Find E(x).
A. 5
B. 
C. 10
D. 28
Mathematics