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20% of 8 million |
2008-10-31 |
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From joe:
what is 20% of 8million
Answered by Penny Nom. |
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Compatible numbers |
2008-10-30 |
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From Paul:
Use compatible numbers to estimate the quotient of 23.52 and 11.04
Answered by Penny Nom. |
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A Kite |
2008-10-30 |
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From Elizabeth:
What is the mathematical term of kite?
Answered by Chris Fisher. |
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A bay window |
2008-10-30 |
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From Scott:
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?
Answered by Harley Weston. |
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What are the equivalent to 0.68? |
2008-10-28 |
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From clay:
what are the equivalent to 0.68 ?
Answered by Penny Nom. |
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Equations with the variable in the exponent |
2008-10-28 |
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From fari:
Solve for x
5 * 4^x-3=40
5^x=25^(x+8)
Answered by Penny Nom. |
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A homework problem |
2008-10-28 |
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From Shawn:
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?
Answered by Penny Nom. |
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The speed of the boat and the river |
2008-10-28 |
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From Jenn:
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?
Answered by Penny Nom. |
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A quadratic |
2008-10-27 |
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From Giselle:
3x squared minus 2x equals -5
Answered by Penny Nom. |
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Nickels, dimes and quarters |
2008-10-27 |
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From val:
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?
Answered by Penny Nom. |
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Three congruent rectangles |
2008-10-27 |
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From Meagan:
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.
Answered by Penny Nom. |
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Tangent line |
2008-10-27 |
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From Maddie:
Find a general equation for a line that touches, but does not pass through the function Y=X2(X squared) + BX+C.
Answered by Stephen La Rocque and Victoria West. |
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2x^3+x^2-2x-1=0 |
2008-10-26 |
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From bobby:
2x^3+x^2-2x-1=0
Answered by Penny Nom. |
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The length of a rectangle is 6 inches less than 3 times its width. |
2008-10-26 |
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From Angela:
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.
Answered by Penny Nom. |
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A sequence |
2008-10-26 |
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From Nicole:
what is the rule to this sequence 3,6,12,24,48.....
Answered by Penny Nom. |
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