Find all real numbers in the interval [0, 2?) that satisfy the equation.2 sin2x = sin x
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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A license plate consists of any five capital letters from the ordinary English alphabet (A through Z) except for the letters O, I, and Q.How many of the license plates have no repeated letters?
A. 23 × 5
B. 
C. 
D. 235
E. none of these
Mathematics
Factor by grouping.x3 + 2x2 + x + 2
A. (x2 + 1)(2x + 2) B. (x2 + 1)(x + 2) C. (2x2 + 2)(x + 1) D. (x2 + 2)(x + 1)
Mathematics
Use a calculator to find an approximate value for s in 
having the given circular function value. Round your answer to eight decimal places.sin s = 0.46184745
A. 2.66151568 B. -0.33848432 C. 0.80310833 D. 0.48007697
Mathematics
Complete.0.066 m2 = _______ cm2
A. 660 B. 6.6 C. 66 D. 6600
Mathematics