Find all solutions of the equation in the interval [0, 2?).2 sin2 ? - 3 sin ? - 2 = 0
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Simplify the expression. Write the result using positive exponents only.
A. 
B. 
C. 
D. 
Mathematics
Use the formula for the sum of the first n terms of an arithmetic sequence to find the indicated sum.
A. 729 B. 621 C. 823.5 D. 594
Mathematics
Solve. Round all amounts to one decimal place.30% of what number is 61?
A. 20.3 B. 203.3 C. 2033 D. 18.3
Mathematics
Determine whether the function is one-to-one.
A. yes B. no
Mathematics