Use a graphical method to solve the equation over the interval [0, 2?). Round results to the nearest hundredth.sin 4x + sin 2x = 2cos x
A. {1.57, 4.71}
B. {1.57, 3.67, 4.71, 5.76}
C. {0.52, 1.57, 2.62, 4.71}
D. {1.57, 4.01, 4.71, 5.42}
Answer: C
Mathematics
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?19 ?b AExpress angle A in terms of b. Use one of the inverse trig functions tan-1, sin-1, or cos-1.
A. A = sin-1 
B. A = tan-1 
C. A = cos-1 
D. A = sin-1 
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Write the mixed number as an improper fraction.-12
A. - 
B. - 
C. - 
D. - 
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Evaluate the algebraic expression for the given values of the variables.3xy2 - 1 for x = 2 and y = 4
A. 575 B. 47 C. 95 D. 191
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Factor by grouping. Assume any variable exponents represent whole numbers.ab - 9c - ac + 9b
A. (b + c)(a + 9) B. (b - c)(a - 9) C. (b + c)(a - 9) D. (b - c)(a + 9)
Mathematics