Use an appropriate identity to find the exact value of the expression.cos (165°)
A. 
B. - 
C. 
D. 
Answer: B
Mathematics
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Find the power function that the graph of f resembles for large values of |x|.f(x) = (x + 7)2
A. y = x49 B. y = x7 C. y = x14 D. y = x2
Mathematics
Add. Write a mixed numeral for the answer.19
A. 31
B. 32
C. 30
D. 19
Mathematics
Solve the differential equation. 
What will be an ideal response?
Mathematics
Use the Gauss-Jordan method to solve the system of equations. If the system has infinitely many solutions, let the last variable be the arbitrary variable.x - z = -2y + z = 10x + z = 3
A. {(1, 15, 5)}
B. 
C. {(-2, 10, 0)}
D. 
Mathematics