Solve the equation over the interval [0, 2?).cos 2x = 
- cos 2x
A. ?
B. 
C. 
D. 
Answer: D
Mathematics
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Use the graph to find a ? > 0 such that for all x, 0 < 
< ? ? 
< ?.
A. 0.1 B. 0.2 C. 9 D. -0.1
Mathematics
Solve the problem.A cylindrical water storage tank has a diameter of 6 meters and a height of 11 meters. Find the capacity of this tank rounded to the nearest hundredth when necessary. Use ? ? 3.14.
A. 13,677.84 m3 B. 1243.44 m3 C. 396 m3 D. 310.86 m3
Mathematics
Solve the equation. Express radicals in simplest form.2x2 - 3x - 5 = 0
A. 
, -1
B. 
, -1
C. 
, 0
D. 
, 1
Mathematics
Multiply.(-6x4)(-2x5)(6x3)
A. -72x60 B. 72x60 C. -72x12 D. 72x12
Mathematics