Solve the equation in the interval [0, 2?). Express solutions as approximations to the nearest hundredth.3 cos2x - 2 cos x - 2 = 0
A. {2.15, 4.13}
B. {4.13, 5.29}
C. {0.99, 2.15}
D. {0.99, 5.29}
Answer: A
Mathematics
You might also like to view...
Find det A using the method of cofactors.A = 
A. 256 B. -310 C. -256 D. 202
Mathematics
Simplify.
A. 
B. 
C. 7
D. 
Mathematics
Find the vertex, focus, and directrix of the parabola. Graph the equation.y2 + 6y = 4x + 15
A. vertex: (-6, -3)
focus: (-7, -3)
directrix: x = -5
B. vertex: (-6, -3)
focus: (-5, -3)
directrix: x = -7
C. vertex: (-6, -3)
focus: (-6, -4)
directrix: y = -2
D. vertex: (-6, -3)
focus: (-6, -2)
directrix: y = -4
Mathematics
Multiply.(220)(1)(30)
A. 6,590 B. 6,610 C. 6,596 D. 6,600
Mathematics