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Foiled by foil |
2009-07-20 |
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From RAY:
how u do the foil ?
the question (x+4)(x+5)
Answered by Robert Dawson. |
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A golf league with 12 players |
2009-07-17 |
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From Jane:
My weekly golf league has 12 players in 4 threesomes.
How many weeks would it take to play everyone once and not have too many
duplications? What would be the schedule each week?
Thanks
Answered by Victoria West. |
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Portion of Work |
2009-07-17 |
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From Ellen:
A girl can shampoo the dog, clean his ears, and clip his nails in 45 minutes.
Her sister can do it in 60 minutes. How long will the job take it they work together?
Answered by Stephen La Rocque. |
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Percentage of Acid |
2009-07-17 |
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From Leeanne:
here is my question:
a chemist has 200 liters of solution that is 5% acid. how many liters of water
(0% acid) must he add to make a solution that is 4% acid?
Answered by Stephen La Rocque. |
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Rearrangements of 8028842 |
2009-07-17 |
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From Con:
How many different 7-digit numbers can be made by rearranging the digits in the number 8028842?
Answered by Penny Nom. |
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Pre-Algebra Resources |
2009-07-16 |
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From M:
What is the best pre algebra book that is inexpensive and will really help
me to understand pre algebra?
Answered by Janice Cotcher. |
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Finding the Line Joining Perpendicular Feet |
2009-07-16 |
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From mukulu:
Please help I've been tryng to search in your data but i failed to get the solution Find the equation of a straight line joining the feet of the perpendiculars drawn from the point A(1,1) to the line 3x-3y-4= 0 and 3x+y-6=0.
Answered by Janice Cotcher. |
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Flying with the sun in view |
2009-07-15 |
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From Randee:
If you wanted to fly in a plane, with a constant "just setting" sun in view, where would you start, what time of day, and what would the altitude and air speed need to be?
Answered by Robert Dawson and Stephen La Rocque. |
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A side of a rectangle |
2009-07-15 |
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From hanbal:
Could please help solving this problem
A(1,3) and D(5,5) are two vertices of a rectangle ABCD. The equation of line AC is 3y=4x + 5
Find
a) the equation of line DC
Answered by Chris Fisher. |
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The lateral area of a cone |
2009-07-15 |
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From ashley:
What is the radius of a cone with the lateral area being 443.3 mm^2 and the slant height being 14.7 mm.
Answered by Penny Nom. |
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Profit as a percentage |
2009-07-15 |
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From Jay:
If I buy an item for $3.00 and sell it for $6.00. What is my percentage of profit?
Answered by Penny Nom. |
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Filling a hole |
2009-07-14 |
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From BARRY:
I HAVE AN AREA THAT i NEED TO FILL WITH DIRT AND AM TRYING TO FIGURE OUT THE CU. YDS NEEDED. tHEY CIRCUMFRANCE OF THE HOLE IS 28' ROUND AND SLOPES FROM 2.5 FEET AT ONE END TO 0 ' AT THE OTHER. OVERALL THE HOLE IS 30' LONG BY 30' WIDE . THE SLOPE RANGES FROM 2.5 ' TO APPROX 4"
Answered by Harley Weston. |
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A tangent to a circle |
2009-07-14 |
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From Eric:
Hi I am trying to complete a packet that has a list of questions to brush up on pre-calculus skills. The question asks "For the circle x^2 +y^2 + 6x - 4y + 3 = 0 find : the equation of the tangent at (-2,5). I have already found the equation for the circle and standard form and the center and radius. However, i do not know how to find the slope or y-intercept of the tangent line. Please help. Thanks.
Answered by Stephen La Rocque. |
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The surface area of a rectangular pyramid |
2009-07-13 |
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From Shivani:
What is the surface area of a rectangular pyramid with a length of 6 inches,
a width of 7 inches and a SLANT height of 4 inches.
Answered by Penny Nom. |
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The product of two consecutive integers |
2009-07-13 |
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From kelly:
the product of two consecutive integers is 9 less than the square of the second integer
Answered by Penny Nom. |
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