By cutting away identical squares from each corner of a rectangular piece of cardboard and folding up the resulting flaps, an open box may be made. If the cardboard is 8 in. long and 3 in. wide, find the dimensions of the box that will yield the maximum volume.
?
A. 
B. 
C. ?
D. ?
E. ?
Answer: B
Mathematics
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Solve by transforming the augmented matrix into row echelon form.
A. (4, 1, 6) B. no solution C. (4, 6, 1) D. (-4, 6, 8)
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Determine the quadrant in which the terminal side of angle ? lies.sec ? < 0 and tan ? < 0
A. Quadrant IV B. Quadrant III C. Quadrant II D. Quadrant I
Mathematics
Multiply and simplify. Assume that all variables represent nonnegative numbers.
(
- 
)
A. 
B. 
- 
C. 10
D. 5
+ 5
Mathematics
Find the exact value. Do not use a calculator.cos ?
A. 1 B. 0 C. -1 D. undefined
Mathematics