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Trinomial Distribution |
2008-10-22 |
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Darya pose la question :
show that (x^2-x+3)(2x^2-3x-9) = Ax^4+Bx^3+C where A,B and C are constants to be found.
Janice Cotcher lui répond. |
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A linear system |
2008-10-22 |
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Tiffany pose la question :
solve:
x + y + z = 4
2x - 3y - z = 1
4x + y - 2z = 16
Penny Nom lui répond. |
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nth term |
2008-10-22 |
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jen pose la question :
what is a nth term and how do i find the nth term of any sequence
Penny Nom lui répond. |
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Factor completely |
2008-10-22 |
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Monica pose la question :
I have to factor the following two items completely, but I am lost. I've tried factoring by substitution and grouping but they don't seem to work:
1. 5(w-3z) -10(w-3z)=
2. ab-21+a3-b7=
Penny Nom lui répond. |
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Area of a triangle |
2008-10-22 |
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Jia pose la question :
I need to find 3 ways of finding the area of a triangle. I've already had one method down which is b x h and divided by 2. What other 2 ways can i find the area of a triangle?
Chris Fisher lui répond. |
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The chairs on a ski lift |
2008-10-21 |
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Travis pose la question :
If you are sitting on chair 33 of a ski lift, which is a loop.
Chairs are numbered consecutively, starting with 1.
Chair 97 passes you halfway up the ski slope.
How many chairs are on the lift?
Penny Nom lui répond. |
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The sum of the reciprocals |
2008-10-21 |
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garry pose la question :
the sum of two different positive numbers is 75 while the product
of the same two numbers is 25. Fine the sum of the reciprocals of these
two numbers
Penny Nom lui répond. |
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Exponential form |
2008-10-21 |
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layla pose la question :
how we wite 256 in exponential form
Harley Weston lui répond. |
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Markup |
2008-10-21 |
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lisa pose la question :
A television cost Best Buy 400.00. They want to sell it at a price of 1500.00. What would the percent markup have to be for this to happen.
Penny Nom lui répond. |
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Is zero a number? |
2008-10-21 |
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milan pose la question :
why people call 0 number?....0 is nothing. What is 1,2,3,4,5,6,7,8,9?than???this is not logic...thanks i dont know what else
number means quantinty,but 0 means nothing.Thanks Mialn
Harley Weston lui répond. |
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What number has 5 hundreds and 12 tens? |
2008-10-21 |
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kellee pose la question :
What number has 5 hundreds and 12 tens?
I would say the number is 620. But, my daughter thinks that is wrong.
Harley Weston lui répond. |
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Scaling a logo |
2008-10-20 |
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Carl pose la question :
Hello!
I hope that you can help me out here. I've been trying to figure this out for awhile now and can't come up with the answer logically.
I am a graphic designer by trade and need to figure out how large my client's logo should be.
The logo will need to be sized proportionally with the surface area of the page.
The logo will always be sized at 1.2938(w) x .75(h) on a letter size page (8.5 x 11).
My question is...
When you increase the size of the page (not always proportionally sized - dimensionally) how do figure out the NEW size of the logo.
I could have a page 20" x 40" or 30' x 4'... or ANY size really.
I believe I have the new surface area of the logo but can't find the new dimensions.
Harley Weston lui répond. |
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Melting ice on a hemisphere |
2008-10-20 |
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heather pose la question :
The top of a silo is the shape of a hemishere of diameter 20 ft. if it is coated uniformly with a layer of ice, and if the thickness is decreasing at a rate of 1/4 in/hr, how fast is the volume of ice changing when the ice is 2 inches thick?
Penny Nom lui répond. |
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The ratio of two chemicals |
2008-10-20 |
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Nathan pose la question :
if there is a chemical mixture of 5:2 and the total amount of the entire solution is 1400 gallons, how many gallons make up the stronger side of the solution? I believe the answer is 1,000 but I figured it out in a non-traditional way so I wanted to understand the basic formula used to determine these types of questions.
thank you
Penny Nom lui répond. |
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I borrowed 2000.00 at a rate of 7% for 1 year |
2008-10-20 |
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carolita pose la question :
if i borrowed 2000.00 at a rate of 7% for 1 year what would be the interest
Penny Nom lui répond. |
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