Use the formula for the sum of the first n terms of a geometric sequence to solve.Find the sum of the first six terms of the geometric sequence: -2, -8, -32, . . . .
A. 2730
B. -42
C. - 1365
D. - 2730
Answer: D
Mathematics
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Find the average value of 
over the given region.
over the rectangular solid in the first octant bounded by the coordinate planes and the planes 
, 
, 
A. 
B. 
C. 
D. 
Mathematics
Write the decimal as a fraction or a mixed number. Express your answer in simplest form.0.54
A. 
B. 
C. 
D. 
Mathematics
Find the specified quantity.Find the amplitude of y = -4 sin (2x + ?).
A. -8 B. ? C. 2 D. 4
Mathematics
Verify that the equation is an identity.tan
= -cot x
What will be an ideal response?
Mathematics