Find the sum of the geometric series.2 + 6 + 18 + 54 + 162 + . . . + 2 ? 310
A. 177,126
B. 177,183
C. 177,148
D. 177,146
Answer: D
Mathematics
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Solve the problem.A conical tank is resting on its apex. The height of the tank is 
, and the radius of its top is 
. The tank is full of gasoline weighing 
How much work will it take to pump the gasoline to a level 
above the cone's top? Give your answer to the nearest ft ? lb.
A. 775,848 ft ? lb B. 415,633 ft ? lb C. 83,127 ft ? lb D. 166,253 ft ? lb
Mathematics
Find the exact circular function value.cos 2?
A. 0
B. 1
C. -1
D. 
Mathematics
Evaluate.(-1)13
A. 1 B. -13 C. -1 D. 13
Mathematics
Give the domain, range, or period, as requested.Domain of y = cot x
A. x ? ?n
B. x ? 
+ ?n
C. x = ?n
D. -? < x < ?
Mathematics