Solve the problem.A stack of poles has 61 poles in the bottom row, 59 poles in the next row, and so on, with 9 poles in the top row. How many poles are there in the stack?
A. 999
B. 936
C. 945
D. 884
Answer: C
Mathematics
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Use implicit differentiation to find the specified derivative at the given point.Find 
at the point (5, 1, -1) for ln 
- exy+z2 = 0.
A. 
B. 
C. 
D. 
Mathematics
Identify the numbers from the given list that belong to the indicated set. 18, 
, -9, 0, 
, 
, 0.64, 0.
Rational numbers
A. 18, -9, 0, 
, 
, 0.64, 0.
B. 18, -9, 0, 
, 
, 0.64,
C. 18, -9, 0, 
, 0.64
D. 18, -9, 0, 
, 0.64, 0.
Mathematics
Find the center of mass of a thin plate of constant density covering the given region.The region enclosed by the parabolas y = - x2 + 32 and y = x2
A. 
= 0, 
= 
B. 
= 0, 
= 32
C. 
= 16, 
= 0
D. 
= 0, 
= 16
Mathematics
Solve using matrices.x - 5y = -4x + 8y = -4
A. (0, -4) B. (4, 0) C. (0, 4) D. (-4, 0)
Mathematics