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What percentage is £2,407.33 of £9,352.41? |
2009-03-16 |
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From Joanne:
Could you show me how to work out what percentage £2,407.33 is of
£9,352.41 in very basic terms.
Thank you very much
Joanne
Answered by Penny Nom. |
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A slopped table top |
2009-03-16 |
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From anthony:
A perfect circle with radius 100m is supported by four legs, 50m long. The circle is flat when all four legs are 50m long, and tilted when the legs are different in length. The four legs are spread evenly 90 degrees apart at 0, 90, 180, and 270. Find the high and low points in degree and height when the legs are 55m at 0 degree, 70m at 90 degree, 45m at 180 degree, and 30m at 270 degree.
Not sure if they can be calculated using only 2 or 3 legs.
I have tried by picking the two adjacent highest legs (55m and 70m) so I know the high point falls into the first quadrant. Then I tried using ratio to determine where the high point is, which I think high point should be closer to the 70m leg, I am not sure. If I can find the high point, the low point should be opposite to it.
Answered by Chris Fisher and Harley Weston. |
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The board for a variant of chess |
2009-03-16 |
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From Adam:
I am trying to figure out how big a piece of wood I need for a variant of chess I thought up. The board essentially is a set of 6 concentric rings with an empty space in the center, each ring consisting of 24 spaces - so essentially 6 concentric 24-sided polygonal rings made up of trapezoidal spaces. I know the interior angle of the shape (15 degrees), but I can't figure out the size this thing should be.
All I know is that the innermost ring will have the smallest spaces, and that those spaces need to be able to accommodate chess pieces 3/4" wide without them overlapping onto neighboring spaces. That is to say, the short parallel side of the trapezoidal space on the innermost ring should be at least 3/4". But I have no clue how to extrapolate the full diameter of the board from that one measurement. HELP!
Adam Goss
saganth@yahoo.com
Answered by Stephen La Rocque. |
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The odds against drawing a red queen |
2009-03-15 |
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From tabyia:
7. The common deck of 52 cards has 26 black cards (13 spades and 13 clubs) and 26 red cards (13 hearts and 13 diamonds). Each suit consists of ace, king, queen, jack, ten, nine, eight, seven, six, five, four, three and deuce. 13in all.
A single card is chosen at random. Find the odds against its being a red queen?
How many cards will I have to draw to be absolutely certain that I have drawn three black cards
Answered by Harley Weston. |
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How do I divide with a decimal is the divisor? |
2009-03-15 |
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From Shelly:
How do I divide with a decimal is the DIVISOR ( NOT divsor AND dividend.) ? Also, How do I know when to stop dividing?
P.s. please use long division
Answered by Penny Nom. |
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The volume of a pipe |
2009-03-15 |
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From kalen:
Okay I am doing a problem on a practice sheet to study with and I need help. The question states:
How many gallons will 500 feet of six-inch water pipe hold?
Do you have any suggestions/breakdowns on how to work out this problem so that in the future
I will know how to do it?
Answered by Penny Nom. |
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An impossible trig problem |
2009-03-14 |
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From Alisha:
If csc theta = 3 and sec theta = square root of 3, what are the values of tan theta and cos^2 theta?
Answered by Harley Weston. |
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How many ball bearings can you make from a cone? |
2009-03-14 |
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From Vatsal:
there is a sum in my maths book which states the following:
how many ball bearings of diameter 2.5 cm. can you get by
melting a solid metalic cone of radi. 20cm and a Hight of 5 meters?
how do i do this please tell me even the minute things like cancellatoins and where to
use = , ; or any such thing because Im a bit weak in maths
Answered by Harley Weston. |
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Related rates |
2009-03-14 |
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From Jeevitha:
The side of an equilateral triangle decreases at the rate of 2 cm/s.
At what rate is the area decreasing when the area is 100cm^2?
Answered by Stephen La Rocque. |
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License plates and poker hands |
2009-03-14 |
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From CC:
You have a license plate it can have 6 numbers/letters you can use the numerals 0-9 and the letters A-Z how many combos are possible and how did you figure it out?
Question 2,
Your dealt an Omaha hand You have KKKQQ, how many different hands can consist of the same cards.
Answered by Harley Weston. |
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Express 13 mills as a decimal part of $1.00. |
2009-03-13 |
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From Kenneth:
Hello:
I read the following in an old business mathematics textbook:
"Express 13 mills as a decimal part of $1.00."
I can determine the answer as follows: There are 1000 mills in or per
$1.00. 13 mills divided by 1000 mills/$1.00 equals $0.013, the answer.
My question is as follows: What does "...as a decimal part of $1.00"
indicate or represent from "Express 13 mills as a decimal part of
$1.00."?
Is (a decimal part of $1.00) any decimal less than $1.00 with the decimal having a dollar sign
before it.
I thank you for your reply.
Answered by Harley Weston. |
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A sequence |
2009-03-13 |
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From Shelly:
Which sequence satisfies the rule n/4?
Answered by Stephen La Rocque. |
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The scale for a model train |
2009-03-13 |
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From Shelly:
Lindy is planning to build a model of a train using a scale where 2 inches represents 25ft. If the train is 60 feet long, what is the length in inches that Lindy should build the model of the train?
Answered by Stephen La Rocque and Penny Nom. |
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Solving an equation for b |
2009-03-13 |
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From ernest:
If 2b=96+b+96+1/2b solve for b?
Answered by Penny Nom. |
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A linear system |
2009-03-13 |
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From Rasanga:
Use the row echelon form of the augmented matrix to solve the following linear system.
X1+2X2+X4=6
X3+6X4=7
X5=1
Answered by Harley Weston. |
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