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forum.virtualchallengemeets.com • View topic - 11A Questions

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11A Questions

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11A Questions

Postby thatoneguy » Fri Feb 03, 2012 1:36 pm

18. All surfaces of a 10lb aluminum cube corrode, losing 20 micro inches of thickness annually. If the density of aluminum is 2.86 g/cm^3, how long would it take for the weight to decrease to 8 lbs?

27. If the number of bacteria doubles every 28 min, how long would it take for the number to triple?

57. A paper grocery bag has a rectangular base and must hold a volume of 2000 in^3. if the width to depth ratio is 7/4, what is the bag height if the bag surface area is minimized?
answer shows 7.74 but i keep getting 9.65

Thanks in advance
'12 District
NS: (lets just say it needs improvement, but I've got a month to work at it)
CA: 248
MA: 284
SC: It was positive at least
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Re: 11A Questions

Postby 88bobcat » Wed Jul 04, 2012 3:54 pm

[unparseable or potentially dangerous latex formula]
[unparseable or potentially dangerous latex formula]

[unparseable or potentially dangerous latex formula]
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Re: 11A Questions

Postby 88bobcat » Wed Jul 04, 2012 10:41 pm

[unparseable or potentially dangerous latex formula]
[unparseable or potentially dangerous latex formula]

[unparseable or potentially dangerous latex formula]
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Re: 11A Questions

Postby 88bobcat » Wed Jul 04, 2012 10:47 pm

[unparseable or potentially dangerous latex formula]
[unparseable or potentially dangerous latex formula]

[unparseable or potentially dangerous latex formula]
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