Evaluate the expression for the given value of x.
?
A. 
B. 
C. 
D. 48
E. -48
Answer: A
Mathematics
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A recursion formula and the initial term(s) of a sequence are given. Write out the first five terms of the sequence.a1 = 2, an+1 = 
A. 2, - 
, -2, 
, 2
B. -2, 
, 2, - 
, -2
C. 2, - 
, 2, - 
, 2
D. 2, 
, -2, - 
, 2
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Find the product.(11 cot2y - tan2y)2
A. 121 cot4y - 22 cot2y + tan4y B. 121 cot4y + tan4y C. 121 cot4y - 22 - tan4y D. 121 cot4y - 22 + tan4y
Mathematics
Solve the system of equations by the substitution method. Check your solutions. For any dependent equations, write your answer in ordered pair form. x + y = 37x + 7y = 21
A. ? B. {(5, -2)} C. {(x, 3 - x)} D. {(0, 0)}
Mathematics
Convert the rectangular coordinates of the point to polar coordinates (r, ?) with r > 0 and 0 ? ? < 2?.(-2
, 2)
A. 
B. 
C. 
D. 
Mathematics