Find the fifth term and the nth term of the geometric sequence whose initial term, a, and common ratio, r, are given.a = 
; r = 
A. a5 = 81
, an = 3n-1/2
B. a5 = 3
, an = 3n/2-1
C. a5 = 9
, an = 3n/2
D. a5 = 243, an = 3n
Answer: C
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Perform the indicated operations.A current of 2.64 e-1.48j amperes flows in a given circuit. Express this current in polar form.
A. -1.48 (cos 2.64° + j sin 2.64° ) B. -1.48 (cos 151.3° + j sin 151.3° ) C. 2.64 (cos (-1.48°) + j sin (-1.48° )) D. 2.64 (cos (-84.8°) + j sin (-84.8° ))
Find the difference.-13 - (-5)
A. -8 B. -18 C. 18 D. 8
Find the volume of the specified solid. Use 3.14 as the approximate value of ?, and round your answer to the nearest tenth.A hemisphere with radius 0.55 yd
A. 0.7 yd3 B. 0.2 yd3 C. 0.3 yd3 D. 0.4 yd3
Solve the problem.Suppose that one box contains n balls, of which 7 are red. A second box contains 
balls, of which n are red. If you select a ball from each box, the probability of not drawing a red ball from the first box and a red ball from the second box is 
? 
. Simplify this expression.
A. 
B. 
C. 
D. 