Solve the equation in the interval [0, 2?). sin x = cos 2x
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Mathematics
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Find the length of the indicated portion of the curve.r(t) = (2cos t)i + (2sin t)j + 3tk, 0 ? t ? ?/2
A. 
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B. 
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C. 
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D. 
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Mathematics
Use the distributive property to factor the following.x2y + xy2
A. x2(y + y2) B. xy(x + y) C. x2(y + xy) D. x(xy + y)
Mathematics
Solve the problem.Suppose that a family has 5 children and that the probability of having a girl is 
. What is the probability of having at least four girls?
A. 0.0313 B. 0.1563 C. 0.3125 D. 0.1875
Mathematics
Find the sum of the sequence.
A. 
B. 
C. 
D. 
Mathematics