Solve the problem.If tan ? = -4.5, find the value of tan ? + tan (? + ?) + tan (? + 2?).
A. -13.5 + 3?
B. -11.5
C. -13.5
D. undefined
Answer: C
Mathematics
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Solve the problem.To get a B in biology, Katie must have a mean score of 81 on five lab reports. Scores on the first four lab reports were 92, 77, 79, and 82. What is the lowest score that Katie can get on the last lab report and still receive a B?
A. 71 B. 83 C. 82 D. 75
Mathematics
Simplify the expression.16-5/4
A. 32
B. not a real number
C. 
D. - 
Mathematics
Identify the number as real, complex, pure imaginary, or nonreal complex. More than one of these descriptions may apply.12
A. real, complex B. complex, pure imaginary C. pure imaginary D. complex, nonreal complex
Mathematics
Add.97,9518833
A. 129,568 B. 128,568 C. 128,468 D. 127,468
Mathematics