Evaluate.2 tan2 120° + 2 sin2 150° - cos2 0°
A. 
B. 
C. - 
D. 
Answer: D
Mathematics
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Solve the problem.In a certain medium, sound travels at a speed of 7895 feet per second. How many meters per second does sound travel in this medium? Round to the nearest tenth.
A. 25,895.6 m/s B. 3079.1 m/s C. 2368.5 m/s D. 7184.5 m/s
Mathematics
Find the perimeter (P) of each figure.
A. 94 cm B. 90 cm C. 47 cm D. not enough information given
Mathematics
Find the balance forward for the check stub.
A. $4,134.57 B. $3,224.46 C. $3,613.40 D. $4,277.92
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Write the solution set in interval notation.{x|-1 < x < 3}
A. (-1, 3] B. [-1, 3] C. (-1, 3) D. [-1, 3)
Mathematics