Find the common difference of the arithmetic sequence 
A. 
B. 
C. 
D. 
E. 
Answer: B
Mathematics
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Determine the symmetries of the curve.r = 9 cos 5?
A. y-axis only B. x-axis, y-axis, origin C. Origin only D. x-axis only
Mathematics
Perform the indicated operations.13 + 22 ? 11 - (-19)
A. 45 B. 206 C. 76 D. 16
Mathematics
Solve the system of equations by the elimination method. Check your solutions. For any dependent equations, write your answer in the ordered pair form.
A. {(1, 0)} B. ? C. {(-1, 0)} D. {(0, 1)}
Mathematics
Express the sum using summation notation.2 + 4 + 6 + ... + 16
A. 
B. 
C. 
D. 
Mathematics