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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Name the conic or limiting form represented by the given equation.4x2 + 48x + 144 = 0
A. Point B. Parabola C. Line D. Ellipse
Mathematics
Perform the indicated operation.(-19) ? (-6)
A. 1140 B. 133 C. 114 D. 14
Mathematics
Find a formula for the nth term of the sequence.The sequence 0, 2, 0, 2, 0, . . . (alternating 0's and 2's)
A. an = 1 + (-1)n+1 B. an = 1 + (-1)n C. an = 1 + (-1)n-1 D. an = 1 - (-1)n
Mathematics
Solve the problem.Construct a possibility tree that shows all possible 2-letter code words using only the letters x and y with repetition allowed.
A.
| /\ |
| x | y |
| /\ | /\ |
| x | y | x | y |
B.
| | |
| x |
| | |
| y |
C.
| /\ |
| x | y |
| | | | |
| y | x |
D.
| /\ |
| x | y |
| /| | | |
| x | y | x |
Mathematics