Solve using Cramer's rule.2x + 5y = 205x + y = -19

A. (-5, 6)
B. (5, -6)
C. (6, -5)
D. (-6, -5)


Answer: A

Mathematics

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Solve the problem by integration.The slope of a curve is given by  Find the equation of the curve if it passes through .

A. y = -  + tan-1  +  - ?
B. y =  - tan-1  -  + ?
C. y = -  + tan-1  +  - ?
D. y =  + tan-1  -  - ?

Mathematics

Write the repeating decimal using an ellipsis.0.

A. 0.8
B. 0. . . .
C. 0.888 . . .
D. 8.888 . . .

Mathematics

Determine whether the ordered pair is a solution of the system of linear equations.(-3, 4);

A. Yes B. No

Mathematics

Find the indicated term of the geometric sequence.a2 = -9, r = -3; Find a5.

A. -81 B. -243 C. 27 D. 243

Mathematics