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Surface area of a cylinder |
2007-05-13 |
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From Nina:
if a cylinder is 23 ft high with a 12 ft radius, how do I find the surface area?
Answered by Penny Nom. |
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Null hypothesis |
2007-05-13 |
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From Dani:
A poll of 1068 American voters indicated that 48% supported te Democratic candidate for presidency. At the 0.05 level of significance, test the claim that less than 50% of American voters preferred the Democratic candidate.
Answered by Penny Nom. |
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Find the sample size needed |
2007-05-13 |
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From Mini:
Find the sample size needed to be 98% confident thata marketing survey on the proportion of shoppers who use the internet for holiday shopping is accurate within a margin of error of 0.02. Assume that the conditions for a binomial distribution are met, and that a current estimate for a sample proportion does not exist.
Answered by Penny Nom. |
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Interval of the domain |
2007-05-13 |
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From Gale:
What does the term interval of the domain mean?
Answered by Penny Nom and Stephen La Rocque. |
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An octagonal sign |
2007-05-13 |
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From Cathy:
An octagonal sign is made by cutting four identical triangles made from a rectangle calculate area of one of the discarded triangles. length of square=26cmx22cm. length of octagonal sides are 10cm x 13cm
Answered by Penny Nom. |
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Counting squares |
2007-05-12 |
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From Bridget:
Explain how many squares there are on a board measuring 4 by 4 units,
Answered by Stephen La Rocque and Penny Nom. |
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Prisoners |
2007-05-12 |
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From Ryan:
Last monday, the county jail had 200 prisoners. Of these, 130 were accused of felonies, and 121 were accused of misdemeanors. How many prisoners were accused of both a felony and a misdemeanor?
Answered by Stephen La Rocque. |
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Exponents and geometry |
2007-05-12 |
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From Cynthia:
Hi is (x^6)(x^4)1/2 = 5
And
How does 1/2(3.14)(4.1) =26.3917
Answered by Penny Nom and Stephen La Rocque. |
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Find the equation of a line passing through two given points |
2007-05-12 |
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From Kenzie:
I am having problems solving an equation of the line passing through (-2,4) and (6,0)
Answered by Penny Nom and Stephen La Rocque. |
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Finding the hypotenuse without Pythagorus |
2007-05-11 |
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From Shelbie:
How do i find the hypotenuse of a right traingle not using the pythagorean thereom if i have the measurements of the legs?
Answered by Stephen La Rocque. |
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Lot size / acreage (more than three sides) |
2007-05-11 |
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From Martha:
What is the lot size of the following dimensions equivalent to acre.
141.85 x 52.55 x 217.63 x 38.89 x 68.08
Answered by Penny Nom and Stephen La Rocque. |
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Pattern for a truncated cone |
2007-05-11 |
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From Mike:
I have been trying to get this cone flat so I can build this column. Can you please help me so I can figure this out? Thanks for your help.
Answered by Stephen La Rocque. |
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Linear growth |
2007-05-11 |
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From Rebecca:
What is the definition of linear growth?
Answered by Penny Nom. |
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Dénombrement |
2007-05-11 |
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From Cosse:
de combien de façons peut-on faire 6 poules de 5 équipes avec
30 équipes?
ou combien de partitions en 6 ensembles de 5 éléments dans un ensemble de 30 ?
et aussi pourquoi ?
Answered by Claude Tardif. |
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How many ways can I choose 4 numbers from 10? |
2007-05-10 |
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From Mitch:
Can you give me a list of all possible four digit combinations using 0 to 9 no repeat numbers and the numbers do not have to be entered in a special order. If you could also show me how to calulate this it would be great
Answered by Stephen La Rocque. |
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