Perform the indicated operation and write the answer in simplest form.
+ 
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Solve the problem.Find the moment of inertia about the y-axis of the thin semicircular region of constant density 
bounded by the x-axis and the curve 
.
A. 
?
B. 320?
C. 160?
D. 
?
Mathematics
Solve the problem.Electrical systems are governed by Ohm's law, which states theV = IR, where V = voltage, I = current, and R = resistance. If the current in an electrical system is decreasing at a rate of 4 A/s while the voltage remains constant at 22 V, at what rate is the resistance increasing when the current is 24 A?
A. 
ohms/s
B. 
ohms/s
C. 
ohms/s
D. 
ohms/s
Mathematics
Give the reciprocal of the number. 15
A. - 
B. 
C. -15
D. 1
Mathematics
Graph the inequality.-2x - 4y ? 8
A. 
B. 
C. 
D. 
Mathematics