Solve the system of equations. If the system has infinitely many solutions, let the last variable be the arbitrary variable.x + 3y + 2z = 11 4y + 9z = -12
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Select from the list of numbers all that belong to the specified set.Irrational numbers-4, 9.1 × 103, 7
, 8.6, 4.5, 0.
A. -4, 9.1 × 103, 0.
, 4.5
B. 7
, 4.5, 0.
C. 7
D. 7
, 0.
Mathematics
Simplify the complex rational expression using either Method I or Method II.
A. 
B. 
C. 
D. 
Mathematics
Find det A using the method of cofactors.A = 
A. -183 B. -3 C. 3 D. 477
Mathematics
Solve the equation.5(t - 1) + 2(t - 1) = -2(t - 2) + 10(t + 2)
A. t = –37 B. t = –33 C. t = –31 D. t = –25 E. t = –28
Mathematics