Perform the indicated operation. Write the result in the form a + bi.(
+ 10i)(
- 10i)
A. -93
B. 7 - 100i
C. 7 - 10i
D. 107
Answer: D
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Solve the problem.Let D be the smaller cap cut from a solid ball of radius 8 units by a plane 4 units from the center of the sphere. Set up the triple integral for the volume of D in rectangular coordinates.
A. 
B. 
C. 
D. 
The area of a regular n-sided polygon with side length a and height his _________________.
Fill in the blank(s) with the appropriate word(s).
Find a general term an for the geometric sequence.a1 = 2, r = 2
A. an= 2 + 2(n - 1) B. an = 2n-1 + 1 C. an = 2(2)n-1 D. an =2( 2)(n-1)
Determine where the function is increasing and where it is decreasing.f(x) = -8x2 - 2x - 4
A. increasing on 
decreasing on 
B. decreasing on 
increasing on 
C. increasing on 
decreasing on 
D. increasing on 
decreasing on 