Solve the equation.0.8x - 0.3 = 0.7x + 0.6
A. 0.3
B. 9
C. 3
D. 0.9
Answer: B
Mathematics
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Find the focus and directrix of the parabola.x2 = 28y
A. (0, -7); x = - 7 B. (7, 0); x = 7 C. (7, 0); y = 7 D. (0, 7); y = -7
Mathematics
Graph the pair of parametric equations in the rectangular coordinate system.x = 4 + 6 sin t, y = 4 + 6 cos t; 0 ? t ? 2? 
A. 
B. 
C. 
D. 
Mathematics
Perform the operation and reduce to lowest terms.5
× 2 × 
A. 4
B. 10
C. 7
D. 10
Mathematics
Solve the system of equations. If the system is inconsistent or has dependent equations, say so.
A. {(-6, 2, -2)}
B. ?; inconsistent system
C. {(2, -2, -6)}
D. {(x, y, z) 
}; dependent equations
Mathematics