Perform the indicated operation.
+ 
A. 
B. 
C. 
D. 
Answer: D
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Simplify the expression. Assume that all variables are positive when they appear.7
- 5
A. 18
B. -18
C. 2
D. 7
- 5
Solve the problem.The equation of the line passing through the distinct points (x1, y1) and (x2, y2) is given by 
= 0. Find the equation of the line passing through the points (3, 5) and (-1, 4).
A. x + 4y + 17 = 0 B. -x + 4y - 17 = 0 C. x - 4y + 17 = 0 D. x + 7y + 17 = 0
Identify the equation without applying a rotation of axes.4x2 + 5xy + 3y2 + 3x + 4y - 10 = 0
A. hyperbola B. parabola C. ellipse D. not a conic
?Applying Kirchhoff's Laws to the electrical network in the figure, the currents I1, I2, and I3 are the solution of the system
Find the currents.
?
?
A. ?I1= 
amperes; I2 = 
amperes; I3 = -17 amperes
B. ?I1= 
amperes; I2= 
amperes; I3= 
amperes
C. ?I1= 6 amperes; I2= 3 amperes; I3= 5 amperes
D. ?I1= 
amperes; I2= 
amperes; I3= 
amperes
E. ?I1= 70 amperes; I2= 91 amperes; I3= 21 amperes