Calculate the circulation of the field F around the closed curve C.F = 
x2yi + 
xy2j; curve C is r(t) = 5 cos ti + 5 sin tj, 0 ? t ? 2?
A. 0
B. 
C. 
D. 
Answer: A
Mathematics
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Find the derivative of the function.y = 
A. y ' = 
B. y ' = 
C. y ' = 
D. y ' = 
Mathematics
Find an equivalent expression by factoring.7 + 35a + 49b
A. 7(1 + 5a + 7b) B. 35(1 + a + b) C. 7(0 + 5a + 7b) D. 7(1 + 35a + 49b)
Mathematics
Perform the indicated operation. Write the answer in simplest form. If the answer is an improper fraction, write it as a mixed number.
÷ 2
A. 7
B. 
C. 
D. 
Mathematics
Solve.The population of Harlowe County is 1,035,709. The population of Farmington County is 123,650. The population of Cameron County is 318,507. Find the difference in population between Harlowe County and Cameron County.
A. 717,202 B. 912,059 C. 922,059 D. 717,192
Mathematics