Solve the system by using the inverse of the coefficient matrix.-5x1 + 3x2 = 8-2x1 + 4x2 = 20
A. (2, 6)
B. (-2, -6)
C. (-6, -2)
D. (6, 2)
Answer: A
Mathematics
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ln (z
)
A. 0
B. ln 9
C. ln 
D. ln 81
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Use the given row transformation to change the matrix as indicated.
; 7 times row 1 added to row 2
A. 
B. 
C. 
D. 
Mathematics
Find the probability.The distribution of B.A. degrees conferred by a local college is listed below, by major.MajorFrequencyEnglish2073Mathematics2164Chemistry318Physics856Liberal Arts1358Business1676Engineering 8689313What is the probability that a randomly selected degree is not in Mathematics? Give your answer as a decimal rounded to three decimal places.
A. 0.303 B. 0.232 C. 0.768 D. 0.682
Mathematics
Graph the parabola.y2 = -12x 
A. 
B. 
C. 
D. 
Mathematics