Write an expression for the nth term of the geometric sequence. Then find the indicated term. (Round your answer to three decimal places.)
a. 
b. 
c. 
d. 
d.
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Find the focus and directrix of the parabola.y2 - 20x = 0
A. F: (5, 0); D: y = -5 B. F: (5, 0); D: x = -5 C. F: (0, 5); D: y = -5 D. F: (5, 0); D: x = 5
Find the derivative.s = t7 tan t - 
A. 
= t7 sec t tan t + 7t6 tan t - 
B. 
= - t7 sec2 t + 7t6 tan t + 
C. 
= t7 sec2 t + 7t6 tan t - 
D. 
= 7t6 sec2 t - 
Solve.The outside of a water storage tank is in the shape of a sphere. Approximate to the nearest hundredth the volume of the tank with a radius of 19.6 feet. Use 3.14 for ?.
A. 1206.26 cu ft B. 1608.35 cu ft C. 31,523.66 cu ft D. 23,642.74 cu ft
Calculate the standard deviation of the grouped data in the problem. Create an extended table using five additional columns.ClassFrequency, F0 - 9 sec1110 - 19 sec1220 - 29 sec1930 - 39 sec2040 - 49 sec2150 - 59 sec17
What will be an ideal response?