Find the cofactor of the indicated element.a12
A. -9
B. 9
C. 6
D. -19
Answer: B
Mathematics
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Simplify the rational expression.
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.The graphs of functions f and g are shown. Use these graphs to find (fg)(1).
?
y = f(x)y = g(x)
A. 3 B. -3 C. 2 D. -4
Mathematics
Multiply or divide by moving the decimal point.0.23 ÷ 100
A. 23 B. 0.0023 C. 0.023 D. 2.3
Mathematics
Compute the partial sum of the geometric series for the stated value of n. Round your answers to four decimal places.ak = 
(k-1); n= 8
A. S8 = 0.6641 B. S8 = 0.6537 C. S8 = 2.2711 D. S8 = 2.7213
Mathematics