Find the divergence of the field F.F = 8x5i + 3y5j + 2z5k
A. 40x4 + 15y4 + 10z4
B. 65
C. 0
D. 8x4 + 3y4 + 2z4
Answer: A
Mathematics
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Solve.By switching service providers, a family's telephone bill decreased from about $50 a month to about $47. What was the percent of decrease?
A.
| 3% |
B. 6.4%
C. 7%
D. 6%
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Solve the problem.Find the common difference of an arithmetic sequence if the first term is 3 and the 8th term is 31.
A. -28 B. 28 C. -4 D. 4
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Identify the axis of symmetry of the parabola.y = 3x2 + 6x + 7
A. x = -4 B. x = 1 C. x = 4 D. x = -1
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Solve the equation.log4(5x + 2) = log4(5x + 7)
A. {0}
B. {5}
C. 
D. ?
Mathematics