Find the coordinates of the midpoint of the line segment PQ.P(3, 9), Q(-9, -6)

A. (-6, 3)
B.
C.
D. (12, 15)

Answer: C

Mathematics

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Using Green's Theorem, compute the counterclockwise circulation of F around the closed curve C.F = - i; C is the region defined by the polar coordinate inequalities 2 ? r ? 4 and 

A. 0
B.
C. - 
D.

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Solve the problem.The position of a particle moving along a coordinate line is s =  with s in meters and t in seconds. Find the particle's acceleration at 

A. -  m/sec2
B.  m/sec2
C. -  m/sec2
D.  m/sec2

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Mathematics

Solve.(x - 7)1/2 = -4

A. 9 B. 3 C. 23 D. No solution

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Mathematics

Solve.A collection of dimes is arranged in a triangular array with 14 coins in the base row, 13 in the next, 12 in the next, and so forth with 1 dime in the last row. Find the value of the collection.

A. $1.05 B. $21.00 C. $5.25 D. $10.50

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Mathematics