Solve the equation.a -  = -3

A. -13
B. 11
C. -11
D. 13


Answer: C

Mathematics

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Solve the system.2x + y = 12x - z = 6y + z = -5

A. Infinitely many solutions B. No solution C. (6, -5, 0) D. (0, 1, -6)

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Express the number in scientific notation.892,784,000,000

A. 8.92784 × 109 B. 8.92784 × 1011 C. 892.784 × 109 D. 8,927.84 × 108

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Use the given information to find the exact value of the trigonometric function.sin ? = - ; The terminal side of ? lies in Quadrant IV.Find sin .

A.
B. - 
C. - 
D.

Mathematics

Provide an appropriate response.True or false? If a < 0 and b < 0, then  ?  = .

A. True B. False

Mathematics