Solve the equation.9b2 + 30b + 15 = -10
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Find the series' radius of convergence.
A. 2 B. ?, for all x C. 0 D. 1
Mathematics
Solve the problem.A student is told to work any 7 out of 10 questions on an exam. In how many different ways can he complete the exam? (The correctness of his answers has no bearing.)
A. 120 B. 10,000,000 C. 720 D. 21
Mathematics
Provide an appropriate response.If Adb = 20 log 
and Vin = 0.3 V and Vout = 25 V, then Adb =
A. 38.4 db B. -76.8 db C. 76.8 db D. -38.4 db
Mathematics
Add and simplify.
+ 
A. 
B. 
C. 
D. 
Mathematics