Use reference angles to find the exact value of the expression. Do not use a calculator.csc 
A. - 
B. - 
C. - 
D. - 
Answer: D
Mathematics
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Give an appropriate answer.Given the function f(x, y) and the positive number ? as in the formal definition of a limit, find a positive number ? as in the definition that insures 
< ?.f(x, y) = (1 + cos x)(x + y); ? = 0.16
What will be an ideal response?
Mathematics
Round as indicated.4431 to the nearest hundred
A. 4300 B. 4410 C. 4500 D. 4400
Mathematics
Simplify the expression by combining any like terms.9y + 3 - 4y + 6
A. 13y + 9 B. 5y + 9 C. 5y - 3 D. 14y
Mathematics
Use matrices to solve the system of equations (if possible). Use Gaussian elimination with back-substitution or Gauss-Jordan elimination.
A. x = -3, y = -4 B. x = 4, y = 3 C. x = -4, y = -3 D. x = -3, y = 4 E. no solution
Mathematics