Add or subtract. Simplify the answer.9 + 
A. 
B. 3
C. 
D. 
Answer: D
Mathematics
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Determine the number of spanning trees in the graph.
A. 10 B. 23 C. 11 D. 24
Mathematics
Solve the problem by integration.By a computer analysis, the electric current i (in A) in a certain circuit is given by 
where t is the time (in s). Find the total charge that passes a point in the circuit in the first 0.300 s.
A. 0.0020 C B. 0.0004 C C. 0.0023 C D. 0.0001 C
Mathematics
Evaluate the expression according to the replacement value given.(15 - p) ÷ (t + 2); replace p with 3 and t with 1.
A. 7 B. 15 C. 3 D. 4
Mathematics
Translate to a proportion and solve. When necessary, round to the nearest hundredth.150 is what percent of 300?
A. 50% B. 200% C. 40% D. 100%
Mathematics