Solve the system of equations by the substitution method.
A. (0, -7)
B. infinite number of solutions
C. (-7, 0)
D. no solution
Answer: D
Mathematics
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Solve the problem.An electron has a 1.6 x 10-19 C negative charge. How much work is done in separating two electrons from 2.4 pm to 7.3 pm?
A. 13 x 10-16 N ? m B. 6.4 x 10-17 N ? m C. 3.6 x 10-17 N ? m D. 7.2 x 10-39 N ? m
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Find dy.y = ln(1 + x3)
A. 
dx
B. 
dx
C. 
dx
D. 
dx
Mathematics
Solve.
+ 
= 
A. No solution B. 4, 3 C. -6, 5 D. -3, -4
Mathematics
Plot the number in the complex plane.-3
A. 
B. 
C. 
D. 
Mathematics