Find three positive numbers x, y, and z whose sum is 27 and product is a maximum.
?
A. 
B. ?
C. 
D. ?
E. ?
Answer: B
Mathematics
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Solve the problem.One conveyor belt can move 1000 boxes in 12 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. 
min
B. 6
min
C. 1
min
D. 
min
Mathematics
Use ? or ? in the blank to make a true statement.{7, 9, 11} {x | x is an odd counting number}
A. ? B. ?
Mathematics
Find the dot product for the pair of vectors.
, 
A. -120 B. 270 C. -195 D. 75
Mathematics
Draw a sketch to represent the vector. Refer to the vectors pictured here. 
c + d
A. 
B. 
Mathematics