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October 21, 2014

October 21, 2014

Posted by **Lauren** on Tuesday, December 1, 2009 at 4:02pm.

Can someone show me the formula on how to get this answer. My text is super confusing.

- college math -
**bobpursley**, Tuesday, December 1, 2009 at 4:05pmexpected value=pr(win)* prize

= 1/250 * 400

Is that expected value greater than the cost of the ticket?

- college math -
**Michelle**, Tuesday, December 1, 2009 at 11:49pmA box, with rectangular sides, base and top is to have a volume of 4 cubic feet. It has a square base. If the material for the base and top costs 10 dollars per square foot and that for the sides costs 20 dollars per square foot, what is the least cost it can be made for?

- college math Michelle -
**PsyDAG**, Wednesday, December 2, 2009 at 10:08amFirst, if you have a question, it is much better to put it in as a separate post in <Post a New Question> rather than attaching it to a previous question, where it is more likely to be overlooked.

Second, your description of the problem is confusing and inadequate. Does "rectangular" apply to all "sides, base and top" or just "sides"? With the statement that follows it, I assume the latter.

Without more information, it is impossible to determine how tall the box is and how small the base is. If the sides were square rather than rectangular, it could be resolved. Is that the case?

Can you repost with more adequate information?

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