Find the divergence of the field F.F = 3x5i + 3y5j + 4z5k
A. 50
B. 15x4 + 15y4 + 20z4
C. 3x4 + 3y4 + 4z4
D. 0
Answer: B
Mathematics
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Solve for the percentage in the problem. Round to the nearest tenth of a percent.960 employees is % of 731 employees.
A. 131.3 B. 76.1 C. 0.1 D. 1.3
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A sign is hung on the wall of a building as in the figure below. Given the downward force and the horizontal force, determine the minimum required strength of a cable from point A to point B.
Downward force: 12 pounds; horizontal force: 12 pounds
A. 24 pounds B. 288 pounds C. 144 pounds D. 16.97 pounds
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Use the indicated model of multiplication to illustrate the statement.7 × 1 = 1 × 7; number-line model
A. 7 × 1 
1 × 7 
B. 7 × 1 
1 × 7 
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Find the magnitude of the vector.u = 
A. 
B. 5
C. 
D. 25
Mathematics