Find the derivative of the given function.y = 1.2 cos-1 3t
A. - 
B. 
C. 
D. - 
Answer: D
Mathematics
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Divide, if possible.-105 ÷ (-5)
A. 
B. 21
C. -21
D. 11
Mathematics
Solve the system of equations. x + y + z = 7 x - y + 2z = 75x + y + z = 11
A. (1, 4, 2) B. (1, 2, 4) C. (4, 2, 1) D. (4, 1, 2)
Mathematics
Solve the polynomial equation by factoring.x4 - 18x2 + 32 = 0
A. 16, 2
B. 16, ±
C. ±4, ±
D. 4, 
Mathematics
Factor by grouping.10x4 + 15x2 - 6x2 - 9
A. (5x2 + 3)(2x2 - 3) B. (5x4 - 3)(2x + 3) C. (5x2 - 3)(2x2 + 3) D. (10x2 + 3)(x2 - 3)
Mathematics