Solve the equation.3x + 5(-2x - 4) = -21 - 6x
A. 
B. {- 1}
C. {1}
D. 
Answer: C
Mathematics
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Find the standard-form equation of the hyperbola centered at the origin which satisfies the given conditions.Vertices at (0, 2) and (0, -2); foci at (0, 3) and (0, -3)
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Mathematics
Find the slope of the line containing the given points.(4, 2) and (7, -2)
A. - 
B. 
C. - 
D. 0
Mathematics
Find an equation of variation for the given situation.y varies directly as the square of x, and y = 22.05 when x = 7.
A. y = 0.49
B. y = 0.5x2
C. y = 0.45x2
D. y = 2.02x2
Mathematics
Solve the system by the method of your choice. Identify systems with no solution and systems with infinitely many solutions, using set notation to express their solution sets.
A. {(5, -3)}
B. {(0, 7)}
C. {(x, y) 
}
D. ?
Mathematics