Solve the problem.The equivalent resistance R? of the resistors R1 and R2 in parallel is given by 
If 
and 
find R1 and R2.
A. 22.0?; 0.94?
B. 26.96?; 1.04?
C. 5.08?; 1.02?
D. 3.29?; 2.32?
Answer: B
Mathematics
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Solve the problem.The electric current i (in A) as a function of the time t (in s) for a certain circuit is given by 
Find the average value of the current with respect to time for the first 5.0 s.
A. 32 A B. 12 A C. 58 A D. 16 A
Mathematics
Solve the problem.The ratio of the lengths of strings that play the notes D and B is 27 to 16. If a string 64 cm long plays a B, what is the length of the string that plays a D?
A. 64 cm B. 91 cm C. 108 cm D. 80 cm
Mathematics
Solve.
= 0
A. {9, -9} B. ? C. {9} D. {-9}
Mathematics
Simplify.
2
A. 2
B. - 
C. -2
D. 12
Mathematics