 |
|
|
|
|
|
|
|
|
20% of 8 million |
2008-10-31 |
|
joe pose la question :
what is 20% of 8million
Penny Nom lui répond. |
|
|
|
|
|
|
Compatible numbers |
2008-10-30 |
|
Paul pose la question :
Use compatible numbers to estimate the quotient of 23.52 and 11.04
Penny Nom lui répond. |
|
|
|
|
|
|
A Kite |
2008-10-30 |
|
Elizabeth pose la question :
What is the mathematical term of kite?
Chris Fisher lui répond. |
|
|
|
|
|
|
A bay window |
2008-10-30 |
|
Scott pose la question :
Given the length of an arc, the rise of an arc, and the number of segments
that I need to divide the arc into - how do I determine the length of each
segment? Imagine a bay window. It could have 5 side or 7 sides, just as
an example. How do I determine the width of each window given that the
unit will be mounted into a frame with a 96 inch opening. The rise of the
unit will extend out 18 inches. Lets say that the number of single windows
unit within the unit is 5. How wide should each window be? Do you
understand?
Harley Weston lui répond. |
|
|
|
|
|
|
What are the equivalent to 0.68? |
2008-10-28 |
|
clay pose la question :
what are the equivalent to 0.68 ?
Penny Nom lui répond. |
|
|
|
|
|
|
Equations with the variable in the exponent |
2008-10-28 |
|
fari pose la question :
Solve for x
5 * 4^x-3=40
5^x=25^(x+8)
Penny Nom lui répond. |
|
|
|
|
|
|
A homework problem |
2008-10-28 |
|
Shawn pose la question :
I'm checking my son's homework and we disagree on the solution.
The problem reads:
135mn^4 (n to the 4th power) over 50n^2 (n squared)
I think the answer is: 27mn^2 (squared) over 10
Can you help?
Penny Nom lui répond. |
|
|
|
|
|
|
The speed of the boat and the river |
2008-10-28 |
|
Jenn pose la question :
On the Amazon River in Brazil, a boat goes 50 miles upstream in 3 hours, later the boat returns to the starting point in 2 hours. What is the speed of the boat in still water and what is the current speed in this part of the Amazon?
Penny Nom lui répond. |
|
|
|
|
|
|
A quadratic |
2008-10-27 |
|
Giselle pose la question :
3x squared minus 2x equals -5
Penny Nom lui répond. |
|
|
|
|
|
|
Nickels, dimes and quarters |
2008-10-27 |
|
val pose la question :
I would like help working out a math word problem. A collection of 30 coins worth $5.50 consists of nickels, dimes, and quarters. There are twice as many dimes as nickels. How many quarters. Could you teach me how to find this formula?
Penny Nom lui répond. |
|
|
|
|
|
|
Three congruent rectangles |
2008-10-27 |
|
Meagan pose la question :
Here is my problem: Three congruent (non-square) rectangles are placed
to form a larger rectangle. [Two are oriented the same way and the
"stacked" while the third is rotated 90 degrees and placed next to the
other two.] The total area is 1350 square cetimeters. Square ABCD is
then created that has the same perimeter as the large rectangle that was
created. E is the midpoint of line CD and F is the midpoint of BC. Find the
area of triangle AEF.
Penny Nom lui répond. |
|
|
|
|
|
|
Tangent line |
2008-10-27 |
|
Maddie pose la question :
Find a general equation for a line that touches, but does not pass through the function Y=X2(X squared) + BX+C.
Stephen La Rocque and Victoria West lui répond. |
|
|
|
|
|
|
2x^3+x^2-2x-1=0 |
2008-10-26 |
|
bobby pose la question :
2x^3+x^2-2x-1=0
Penny Nom lui répond. |
|
|
|
|
|
|
The length of a rectangle is 6 inches less than 3 times its width. |
2008-10-26 |
|
Angela pose la question :
The length of a rectangle is 6 inches less than 3 times its width. Find the
dimensions of the rectangle if its area is 45 square inches.
Penny Nom lui répond. |
|
|
|
|
|
|
A sequence |
2008-10-26 |
|
Nicole pose la question :
what is the rule to this sequence 3,6,12,24,48.....
Penny Nom lui répond. |
|
|
