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The range of a function |
2005-08-21 |
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From Kelsey:
What is the range of the function f(x) = 4x - 6 when the domain is {-3,-1,1,3,5}?
Answered by Penny Nom. |
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Fran goes to college |
2005-08-21 |
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From Thomas:
Fran will begin attending longview college 1 year from now and will attend for the next 4 years. Her annual cost will be $14,000.00 which her parents have agreed to pay. Frans parents have saved enough money to meet Frans needs. How much must they invest in an account paying 10% interest compounded annually in order to receive $14,000.00 at the end of each of the next 4 years, having nothing left in the account at the end of that time?
Answered by Penny Nom. |
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Their sum equals their product |
2005-08-21 |
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From Claudio:
Find a thousand natural numbers such that their sum equals their product.
Answered by Penny Nom. |
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3A/4 +1=(2A-1)/3 |
2005-08-21 |
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From Rachael:
I'm doing a practice test question and the answer I keep turning out is different from the answer on the answer sheet. I think I might be forgetting a step. The problem is:
3A/4 +1=(2A-1)/3
The answer is -16. If anyone could explain the steps to me to getting the answer I would be grateful. Whenever I do it I get something completely different.
Answered by Penny Nom. |
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The area of an octagon |
2005-08-21 |
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From A student:
Hi I am a ninth grade student trying to figure the area of an octagon with sides of 4 feet and another one with sides of 5 feet
Answered by Penny Nom. |
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Can one place 15 integers around a circle... |
2005-08-20 |
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From Hernan:
Can one place 15 integers around a circle so that the sum of every 4 consecutive numbers is equal either to 1 or 3?
Answered by Claude Tardif. |
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The radius of an arc |
2005-08-19 |
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From Jared:
I need to be able to calculate the radius of an arc on an existing structure (Supports for Fifth Ave Dimensional Text). I have the overall length of this structure, but, the complication I believe lies in the fact that it is a curve mounted onto a flat section of wall on either side of a very mild curve, therefore, measuring the middle of the wall to the top of the arc does me little good...The reason I need this is to be able to replicate the above curve on a similar structure to be mounted below it...Also, because the client wants the structure mounted on the inside of the opening below the existing, the beginning and end point of the new structure would be lower than the existing, so, I do not believe that it is possible to exactly replicate the radius of the above curve?
Answered by Penny. |
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Which number is greater? |
2005-08-18 |
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From Dante:
Which number is greater: 888....88 X 333...33 or 444.......44 x 666........67 (each of the numbers has 1989 digits)?
Answered by Claude Tardif. |
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Three days interest on one million dollars |
2005-08-18 |
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From Teresa:
how much money is 3 days interest on one million dollars?
Answered by Penny Nom. |
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The volume of the earth in gallons |
2005-08-18 |
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From Daniel:
I would like to know how to find the volume of the Earth in gallons.
Answered by Penny Nom. |
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Sample variance |
2005-08-17 |
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From Rosalie:
To give an unbiased estimate of the population variance, the denominator of the sample variance should be (n-1) instead of n. I tried to convince myself by comparing the population variance and sample variance (with denominator n and n-1):
Answered by Penny Nom. |
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My fantasy football league |
2005-08-16 |
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From Jim:
I have to make a schedule for my fantasy football league. There are 10 teams in the league and we play a 13 week season. The challenge is we want to play each team only once during the first 10 weeks. This way no team will play another team twice without having played each team at least once. Is this possible?
Answered by Penny Nom. |
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Hat size |
2005-08-16 |
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From Keshia:
What formula would I use to find the measurement of a hat size? Ex. If the hat was 7 3/4", what formula would I use to get that measurement?
Answered by Penny Nom. |
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Is this percentage change or percentage increase? |
2005-08-15 |
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From Betty:
When calculating a percentage, if the formula is
A(new) - B(old)/A(new)
Is this percentage change or percentage increase?
Answered by Penny Nom. |
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The diagonals of a hexagon |
2005-08-15 |
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From Brittany:
are all of diagonals in a hexagon has same length
Answered by Penny Nom. |
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