Solve by completing the square.a2 - 2a - 3 = 0
A. 3, -1
B. -2, -1
C. -3, 1
D. ± 
Answer: A
Mathematics
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Use Cramer's rule to solve the system. 3x + 3y = 42 4x + 3y = 48
A. {(6, 8)} B. {(-6, -8)} C. {(8, 6)} D. {(-8, 6)}
Mathematics
Determine if the graph of the function is concave up or concave down.y = (x + 2)2
A. Concave down B. Concave up
Mathematics
Solve the formula for the specified variable. Assume all variables represent nonnegative numbers. If possible, simplify radicals and rationalize denominators. F = 
for d
A. d = 
B. d = 
C. d = 
D. d = 
Mathematics
Find the radian measure of the angle ?.The length of the circular arc associated with ? is 36 on a circle of radius 6.
A. - 
B. -6
C. 
D. 6
Mathematics