Find the number of elements in the indicated set by referring to the given table.The table below shows the results of a poll taken in a U.S. city in which people are asked which candidate they intend to vote for in an upcoming presidential election. 
Find the number of people in the set B ? (R' ? A)
A. 988
B. 0
C. 440
D. 461
Answer: D
Mathematics
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Solve the quadratic inequality.
< 6
A. -5 < x < -1, 1 < x < 3 B. -3 < x < -1, 1 < x < 5 C. -3 < x < -1, 3 < x < 5 D. -3 < x < 1, 3 < x < 5
Mathematics
Find the angle between the given vectors. Round to the nearest tenth of a degree.u = i - j, v = 3i + 5j
A. 110.1° B. 104° C. -14° D. 14°
Mathematics
A point lying on the terminal side of angle ? is given. Find the exact value of the indicated trigonometric function of ?.(12, 16) Find sin ?.
A. 
B. 
C. 
D. 
Mathematics
Factor the polynomial by grouping.15x2 - 6x + 10x - 4
A. (15x - 2)(x + 2) B. (3x - 2)(5x + 2) C. (3x + 2)(5x - 2) D. (15x + 2)(x - 2)
Mathematics