Perform the indicated operation. Simplify if possible.
+ 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Answer the question.A box contains 5 red, 7 orange, 6 black, 8 green, and 4 blue marbles. Without looking, Martha reaches in the box for marbles. How many marbles must Martha take from the box to be sure that at least two marbles are the same color?
A. 6 marbles B. 7 marbles C. 5 marbles D. 10 marbles
Mathematics
Simplify.
A. 
B. 
C. 
D. 
Mathematics
Combine. Simplify the answer.
+ 
+ 
A. 
B. 
C. 
D. 
Mathematics
Evaluate the integral.
Mathematics