Solve the problem.One conveyor belt can move 1000 boxes in 9 minutes. Another can move 1000 boxes in 11 minutes. If another conveyor belt is added and all three are used, the boxes are moved in 3 minutes. How long would it take the third conveyor belt alone to do the same job?
A. 
minute
B. 
minute
C. 7
minutes
D. 1
minutes
Answer: C
Mathematics
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Factor the trinomial completely. If the trinomial cannot be factored, say it is prime.m2 + mn - 56n2
A. (m + 8n)(m - 7n) B. (m + 8n)(m + 7n) C. (m - 8n)(m + 7n) D. (m - 8n)(m - 7n)
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Write sigma notation.
+ 
+ 
+ 
+ 
A. 
B. 
C. 
D. 
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Multiply.(70,046.91)(0.00001)
A. 7004.691 B. 0.7004691 C. 7.004691 D. 700.4691
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Perform the indicated operation.
+ 7b
+ 5
A. 252ab
B. 54ab2
C. 252b
D. 54b
Mathematics