Use a half-angle formula to find the exact value of the expression.tan 165°
A. -
+ 2
B. -
- 2
C. 
- 2
D. 
+ 2
Answer: C
Mathematics
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Write as a fraction in simplest form.0.7%
A. 
B. 
C. 
D. 
Mathematics
Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Mathematics
Perform the indicated operation(s). Simplify if possible.
- 
A. 2y B. 0 C. 4y D. 5x
Mathematics
Solve the problem.The quadratic function 
models the median, or average, age, y, at which U.S. men were first married x years after 1900. In which year was this average age at a minimum? (Round to the nearest year.) What was the average age at first marriage for that year? (Round to the nearest tenth.)
A. 1954, 36 years old B. 1936, 51.1 years old C. 1960, 22.3 years old D. 1960, 51.1 years old
Mathematics