Solve the problem.Find the probability of having 4 girls in a 4-child family.
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Compute r''(t).r(t) = (2 cos t)i + (6 sin t)j
A. r''(t) = (-2 cos t)i + (-6 sin t)j B. r''(t) = (-2 sin t)i + (-6 cos t)j C. r''(t) = (2 sin t)i + (6 cos t)j D. r''(t) = (2 cos t)i + (6 sin t)j
Mathematics
Use Stokes' Theorem to calculate the circulation of the field F around the curve C in the indicated direction.F = -6yi + 6xj + 2z3k ; C: the portion of the plane 2x + 7y + 9z = 1 in the first quadrant
A. 
B. 0
C. - 
D. 12
Mathematics
Solve the problem.To solve the rational inequality 
? 2, you can first write the inequality with 0 on one side and the other side expressed as a single fraction. Give the solution.
A. [0, 1) B. (0, 1] C. [-2, 1) D. {1}
Mathematics
Simplify the expression.3x + x
A. 4x B. 3x C. 7x D. 3x + 1
Mathematics