Calculate the circulation of the field F around the closed curve C.F = xyi + 6j , curve C is r(t) = 5 cos ti + 5 sin tj, 0 ? t ? 2?
A. 
B. 12
C. 0
D. - 
Answer: C
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Find the probability.A die is rolled 20 times and the number of twos that come up is tallied. Find the probability of getting more than three twos. Round to the nearest thousandth when necessary.
A. 0.433 B. 0.905 C. 0.564 D. 0.403
Solve using the elimination method. If the system has an infinite number of solutions, use set-builder notation to write the solution set. If the system has no solution, state this. x + 2y = 10 7x + 2y = 22
A. (2, 4) B. No solution C. (3, 3) D. (-4, 2)
Write the following as a sum using powers of 10 to show place value.0.027
A. 0 ? 100 + 0 ? 10-1 + 2 ? 10-2 + 7 ? 10-3 B. 0 ? 100 + 0 ? 101 + 2 ? 102 + 7 ? 103 C. 0 ? 101 + 0 ? 102 + 2 ? 103 + 7 ? 104 D. 0 ? 100 + 2 ? 10-1 + 7 ? 10-2
Multiply and simplify.
? 
A. 1
B. 
C. -1
D. 0