Solve using matrices. 5x + y = 23 3x + 3y = 9

A. (-2, -5)
B. (5, -2)
C. (5, -5)
D. (-2, 5)

Answer: B

Mathematics

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Find the general solution of the differential equation. Use C, C1, C2, . . . to denote arbitrary constants. If used, do not simplify hyperbolic functions.p'(x) =  - 6 + 12x5

A. p = -  - 6x + 2x6 + C
B. p = -  - 6x - 2x6 + C
C. p =  - 6 + 2x6 + C
D. p = -  + 6x - 2x6 + C

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Mathematics

Identify the curve represented by the equation.8.7x2 = 3y - 8.7y2

A. Ellipse B. Hyperbola C. Circle D. None of these

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Mathematics

Solve the system of equations by substitution.

A. x = -7, y = 7; (-7, 7) B. x = -6, y = 6; (-6, 6) C. x = 6, y = -6; (6, -6) D. x = 7, y = -7; (7, -7)

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Mathematics

Decide whether A and B are inverses by calculating AB and BA.A =   B =  

A. Yes B. No

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Mathematics