Use Cramer's rule to solve the system of equations. If D = 0, use another method to determine the solution set.9x + 5y = -38-7x - 2y = 39
A. Cramer's rule does not apply since D = 0; ?
B. {(-7, 5)}
C. {(-8, 6)}
D. {(-7, 6)}
Answer: B
Mathematics
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A. 2.45 B. 2.83 C. 4.00 D. 2.00
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A. Not orthogonal B. Orthogonal
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Use the binomial theorem to expand the expression.(x + y)4
A. x4 + 4x3 + 6x2 + 4x + 1 B. x4 + 4x2y2 + y4 C. x4 + 4x3y + 6x2y2 + 4xy3 + y4 D. x4 + 4x3y + 4x2y2 + 4xy3 + y4
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Clear fractions then solve by substitution.
- 
= -18
+ 
= -9
A. {(12, 0)}
B. 
C. {(-12, 0)}
D. ?
Mathematics