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More than 100% |
2008-02-04 |
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From francisco:
when changing from a percent to a decimal,how can you tell when the decimal will be greater than 1?
Answered by Penny Nom. |
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The volume of a pyramid |
2008-02-03 |
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From Britni:
The base of this pyramid is an equilateral triangle with sides 8 units.
The altitude of the pyramid is square root of 3. What is its volume?
Answered by Penny Nom. |
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Total profit |
2008-02-03 |
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From Rhonda:
I help to manage a concession stand. We sell a variety of items. Some have a profit of 60%, some 80%, etc. We have done nothing scientific to choose our prices. We just try to stay in the ballpark of schools around us. Our administrator wants to pay those that run the concession stand a percent of what is in the cash box after start-up money is taken out. We have some gathered some data (not much) on how many of each item we sell and can certainly calculate percent profit. Is the profit for the entire concession stand a weighed average? I'm thinking (% profit on candy)(number candy sold) + (percent profit nachos)(number nachos sold) + (percent profit pop)(number pop sold), etc. Will this work? Does the AMOUNT of profit for these different items need to be figured-in? Hmmm. . .
Answered by Victoria West and Harley Weston. |
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A inear system |
2008-02-03 |
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From Kelly:
is (-1,5) a solution of each system? y=-x+4 y=-1/5x
Answered by Penny Nom. |
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Numbers and Operations |
2008-02-02 |
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From Charlotte:
On the TABE (Test for Adult Basic Education) test, one of the categories
is number operation. I would like to know what consist of number operation.
Answered by Penny Nom. |
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The size of a lot |
2008-02-02 |
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From linda:
Hi, could you please tell me how close to an acre of land my lot is. The lot size is 140 ft by 200ft. I am trying to see how close to an acre it is.
Answered by Penny Nom. |
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The 5% GST |
2008-02-02 |
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From Nathalie:
The GST is now 5% I have a new amount $587.43 what is the formula to calculate the GST. On the $587.43
Answered by Penny Nom. |
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The perimeter of a semicircle |
2008-02-02 |
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From Lisa:
How do you find the perimeter of a semi circle when you are only given
the diameter, say 24 units?
Answered by Penny Nom. |
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Percentage savings |
2008-02-01 |
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From Donna:
What is the percentage of savings if I bought an item for $98.60 that was $152.23 and something for $96.48 that was $136.65?
Answered by Penny Nom. |
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Two equations in x and y |
2008-02-01 |
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From leslie:
6x+8y=40 4x+5y=25
Answered by Penny Nom. |
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The dimensions of a rectangle |
2008-02-01 |
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From Evan:
you are given that the area of a rectangle is 21.6in sq. find the base and the height of the rectangle.
Answered by Penny Nom. |
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Driving from Mathville to Bioville |
2008-02-01 |
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From Ariel:
Mahtab took hours to drive from Mathville to Bioville, a total of 485 km.
She drove part by highway at 80 km/h and part by slow roads at 30 km/h.
How many hours did she drive each type of road?
Answered by Penny Nom. |
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The sign of the quotient of two integers |
2008-02-01 |
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From michelle:
without actually dividing, how can you decide whether the quotient of two integers is A. positive B. negative C. 0?
Answered by Penny Nom. |
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Tiles on a basement floor |
2008-01-31 |
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From ORIETTA:
I have a basement 1000 sq ft I want to purchase tile that are 18x18inches
and they are charging 4.15 sq ft how much would it cost since I will need
less tiles to cover the area since it's not 12X12
Answered by Penny Nom. |
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Bubbles trapped in the volumetric pipet |
2008-01-31 |
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From Nursing:
In determining the density of a liquid, a student left air bubbles trapped in the volumetric pipet. Did this give a density less than expected or greater than expected? Why?
Answered by Penny Nom. |
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