Solve the problem.The radial flow field of an incompressible fluid is shown below. For which of the closed paths is the circulation not necessarily zero?
A. A, B, and C
B. A and B only
C. C only
D. none of these
Answer: C
Mathematics
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Solve the equation by factoring.54x2 + 30x = 0
A. {0}
B. {
, 0}
C. {
, - 
}
D. {- 
, 0}
Mathematics
Solve the problem.Four boys and three girls are seated, in a row, at random, to watch a play. What is the probability thata) a girl is seated at each end of the row?b) one of the boys is seated in the middle seat?c) boys and girls are seated alternately?
A. a) 
b) 
c) 
B. a) 
b) 
c) 
C. a) 
b) 
c) 
D. a) 
b) 
c) 
Mathematics
Simplify.65 - 23(2) + 30
A. 114 B. 1344 C. 49 D. 74
Mathematics
Find the specified vector or scalar.v = -7i + 3j; Find 
.
A. -10
B. 20
C. 10
D. 20i
Mathematics