Use the unit circle to determine the value of the given expression or state that it is undefined.tan (390°)
A. 
B. 
C. - 
D. 
Answer: D
Mathematics
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Solve the problem.Subtract (20a4 - 13a3) from (-5a4 - 17a3).
A. -25a4 - 30a3 B. 15a4 - 30a3 C. -29a7 D. -25a4 - 4a3
Mathematics
Find the LCD for the fractions in the list.
, 
A. 8a2 + 8 B. 8a(a + 8) C. 8a + 8 D. 8a2 + 64
Mathematics
Write the percent problem as a proportion and solve.What percent of 1600 is 100?
A. 16.5% B. 6.25% C. 1.25% D. 16.75%
Mathematics
Graph the function by starting with the graph of the basic function and then using the techniques of shifting, compressing, stretching, and/or reflecting.f(x) = |-x|
A. 
B. 
C. 
D. 
Mathematics