Determine if the series converges absolutely, converges, or diverges.
A. Converges conditionally
B. Diverges
C. Converges absolutely
Answer: B
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Find v ? u.v = 
and u = 
A. 0
B. 
C. 
i - 
j
D. 
i - 
j
Write a formula for the general term (the nth term) of the arithmetic sequence. Then use the formula for an to find a20, the 20th term of the sequence.3, 12, 21, 30, 39, . . .
A. an = 9n - 2; a20 = 178 B. an = 6n - 2; a20 = 118 C. an = 9n - 6; a20 = 174 D. an = 6n - 9; a20 = 111
Provide an appropriate response.Estimate answer by rounding numbers to the nearest ten. Then find the exact answer. A welder uses 88 welding rods for his first job and 19 welding rods for a second job. How many more rods did he use for the first job?
A. 60 rods; 79 rods B. 70 rods; 71 rods C. 60 rods; 69 rods D. 70 rods; 69 rods
Use De Moivre's theorem to evaluate the expression. Write the result in standard form.(3(cos 90° + i sin 90°))5
A. 0 B. -243i C. 243i D. 15i