Find the exact value of the expression.sin 260° cos 20° - cos 260° sin 20°
A. - 
B. 
C. - 
D. 
Answer: C
Mathematics
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Solve the inequality, then graph the solution.-12 < 4y ? 4 
A. [-3, 1)
B. (-3, 1)
C. [-3, 1]
D. (-3, 1]
Mathematics
The scores on a 30-point multiple-choice exam are given in the following frequency table:
The first quartile on the exam is
A. 25. B. 24.5. C. 24. D. 25.5. E. none of these
Mathematics
Solve the equation.
x = 2 + 
x
A. {-30} B. {60} C. {30} D. {-60}
Mathematics
Evaluate the expression without a calculator.2-4
A. 
B. 
C. 16
D. -16
Mathematics