Solve the equation by completing the square.x2 - 12x + 11 = 0
A. {
, -1}
B. {11, 1}
C. {10, 1}
D. {-11, -1}
Answer: B
Mathematics
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The measure of a vertex angle in a regular polygon with nine sides is
(a) 140° (b) 220° (c) 1260° (d) 20° (e) 40°
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A geometric sequence is given. Find the common ratio and write out the first four terms.{dn} = 
A. r = 2; d1 = 
, d2 = 
, d3 = 
, d4 = 
B. r = 
; d1 = 
, d2 = 
, d3 = 
, d4 = 
C. r = 
; d1 = 
, d2 = 
, d3 = 
, d4 = 
D. r = 2; d1 = 
, d2 = 
, d3 = 
, d4 = 
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Select the correct graph of the parabola represented by the equation
a. 
b. 
c. 
d. 
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