Perform the indicated operation. Write the answer in scientific notation.
A. 7.6 × 10-2
B. 3.8 × 1010
C. 3.8 × 10-2
D. 7.6 × 1010
Answer: C
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Find the indicated sum. Find the sum of the first 9 terms of the geometric sequence: 
, 
, 
, 
, 
, . . .
A. 
B. 
C. 
D. 
Perform the indicated operation and simplify.Given f(x) = 
and g(x) = 
, find f(x) - g(x).
A. 
B. 
C. 
D. 
Write the sum or difference as a product containing only sines and/or cosines.cos(6?) - cos(2?)
A. -2 sin(4?) sin(2?) B. -2 cos(4?) sin(2?) C. 2 cos(4?) cos(2?) D. 2 cos(2?)
Provide an appropriate response.We say that a function f(x, y, z) approaches the limit L as (x, y, z) approaches (x0, y0, z0) and write src="https://sciemce.com/media/4/ppg__10615191621__f1q268g5.jpg" alt="" style="vertical-align: -8.0px;" />
What will be an ideal response?
f(x, y, z) = Lif for every number ? > 0, there exists a corresponding number ? > 0 such that for all 
in the domain of f, 
Show that the 
requirement in this definition is equivalent to