Find the exact value of the expression. Do not use a calculator.tan 150° cos 210°
A. 
B. 
C. 
D. - 
Answer: D
Mathematics
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Write the fraction as a decimal.
A. 5.46 B. 54.6 C. 0.546 D. 0.0546
Mathematics
Express the sum or difference as a product.sin 75?+ sin 15?
A. 
B. - 
C. 
D. 
Mathematics
Answer the question about the given function.Given the function f(x) = x2 + 4x - 12, list the x-intercepts, if any, of the graph of f.
A. (6, 0), (-2, 0) B. (-6, 0), (2, 0) C. (-6, 0), (1, 0) D. (6, 0), (2, 0)
Mathematics
Use a system of equations to find the specified equation that passes through the points. Solve the system using matrices.
Parabola: y = ax2 + bx + c
A. ?
B. ?
C. ?
D. ?
E. ?
Mathematics