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	Un polyedre ayant comme face 20 triangles		2000-08-02
		Sonia pose la question : J'aimerai savoir comment s'appelle un polyedre ayant comme face 20 triangles équilatéraux égaux. Chris Fisher lui répond.
	Arranging buttons in a row		2020-08-24
		Nick pose la question : A sequence of 10 buttons can be arranged in a line. The buttons are identical except for colour, with each button being either red, blue or green. Arranging buttons in a row How many sequences can be made where there are exactly 2 red buttons as part of the sequence of 10 buttons? How many sequences can be made where there are exactly 4 red buttons as part of the sequence of 10 buttons? Penny Nom lui répond.
	Filling holes with stone dust		2020-07-30
		Zach pose la question : I’m looking for amount of stone dust needed for thirteen holes with a 3ft depth and 12in diameter with a 4x4 post. I would need the measurement in KG. Harley Weston lui répond.
	The volume of a stone		2020-05-02
		KHOSI pose la question : A rectangular container is 9cm wide,17cm long and contains water to a depth of 11cm. A stone is placed in the water and the water rises 2,2cm .Find the volume of the stone Penny Nom lui répond.
	Conversing from tons to cubic yards		2019-08-03
		Kathleen pose la question : Is there a simple formula to convert the following from tons to cubic yards: Topsoil Sand base Fill dirt Penny Nom lui répond.
	5 mm of water over 1 hectare		2018-08-10
		Joyce pose la question : Please help me with this question. How many tonnes of water fell on 1 hectare of land during a rainfall of 5mm? Penny Nom lui répond.
	Paving stones area		2018-08-08
		Declan pose la question : I am thinking of buying some reclaimed block paving stones. There are 750 pieces in total. 60% are L- 140mm x W -140mm x H-50mm 40% are L-170mm x W-140mm x H-50mm How much area will this cover? Penny Nom lui répond.
	Solve sinX=0.703X for X		2018-03-13
		PARAM pose la question : sinX=0.703X Penny Nom lui répond.
	2^x= -2x - 11		2016-11-27
		Kathy pose la question : I don't know how to start this problem: 2^x= -2x - 11 Penny Nom lui répond.
	The height of a parabolic arc		2015-12-30
		Tom pose la question : Is there an algebraic means to determine the highest point of a parabolic arc if the base and perimeter are known? Penny Nom lui répond.
	The positive root of sin(x) = x^2		2015-12-13
		Kemboi pose la question : Find the positive root of the equation sin(x) = x^2 Penny Nom lui répond.
	A stone walkway around a pool		2015-05-29
		Jerri pose la question : I have a rectangular pool 15x30 and it will require stone placed around it 4 feet out and 4 inches deep how much will I need? Thanks, jerri Penny Nom lui répond.
	Filling three holes with stones		2014-08-20
		mark pose la question : how many tonnes of hardcore/crushed stone would it take to fill 1 hole 9ft diameter 5ft deep and 2 holes both 3ft diameter and 5ft deep Penny Nom lui répond.
	An oval pool		2014-06-21
		steve pose la question : I have a 16' x 28' oval pool that is buried 24" deep inground. The dig site is dug 2' wider all the way around the pool. I need to back fill this area with stone. I want to fill this area with 6 to 8" of stone. How many tons of stone will this take? Thanks you Steve Penny Nom lui répond.
	x - 2 Sin[x] = 0		2014-05-08
		chanmy pose la question : please help me to sole this equation x - 2 Sin[x] = 0,thank you Penny Nom lui répond.
	Converting cost per cubic yard to cost per ton		2014-02-05
		Mayra pose la question : If 18 cubic yards= 25 tons and it's $28.00 per yard how much is it a ton. I need help please a refresher on my algebra. Thank you Penny Nom lui répond.
	n log n = 36 * 10 ^ 12		2013-11-12
		shihab pose la question : How to find value of n in this equation : n log n = 36 * 10 ^ 12 Penny Nom lui répond.
	Ordering crushed stone		2013-09-03
		Prakash pose la question : Dear Sirs, I am working in a Soft Landscaping contracting company. If I need to purchase crushed stone with the size 50-70mm for $53,429 m^2$ area, how many 20feet containers should I need to order to my suppliers? The 20foot container has internal dimensions 5,897 mm by 2,348 mm by 2,285 mm and the $53,429 m^2$ area is to be covered by 10 cm of stone. Harley Weston lui répond.
	Sinx=logx+x^2		2012-11-28
		yasmin pose la question : Sinx=logx+x^2 Harley Weston lui répond.
	Fence post holes		2012-07-19
		Gerry pose la question : Hello, I'm digging 30 8" dia holes, 5 ft deep for fence posts that are 4"x 4" Can you please help me figure out how much stone dust I should order for all 30 holes. Thanks Penny Nom lui répond.
	Using Newton's Method to find a root		2012-04-09
		Nancy pose la question : Use Newton's method to find the real root function, accurate to five decimal places f(x) = x^5+2x^2+3 Penny Nom lui répond.
	How many gallons of water will it take to fill a classroom?		2010-12-01
		deena pose la question : How many gallons of water will it take to fill a classroom that is 26 feet long by 19 feet wide and 9 feet high? How many tons of water will that be? Stephen La Rocque lui répond.
	A logarithmic equation		2010-09-08
		Rohit pose la question : x^2 + k*ln(x) - c - k = 0 Where k and c are constants. Penny Nom lui répond.
	The tonnage of some gravel		2010-07-22
		Gregory pose la question : i have a road that is 8 miles long 20 feet wide and 4 inches deep what is the tonnage for gravel i would need Penny Nom lui répond.
	Arc length and Chord length		2010-03-13
		Darryl pose la question : Is there a formula to determine the chord length of an arc knowing only the arc length and the arc depth (sagitta)? I know you can't find the radius with only these two inputs, but can you find the chord length? Harley Weston lui répond.
	Cooling		2010-03-07
		Lori pose la question : If a house is always at 20 degrees celsius. Water (tea) boils at 100 degrees celsius. 5 minutes later the tea was 70 degrees celsius. Use an equation to predict the temperature after 20 minutes. Tyler Wood lui répond.
	A push-button padlock		2010-01-17
		Vince pose la question : Hi, I have a push-button padlock using ten buttons (1-2-3-4-5-6-7-8-9-0). Five digits must be pushed in order to open the lock. Each digit can only be used once. Order is not supposed to matter. How many different possible combinations? And what are they? Harley Weston lui répond.
	541.39(1 + i)^15 = 784.09		2009-10-14
		Fitore pose la question : Hi, I noticed that this question was already posted up, however I was hoping I could solve it without having to use logs. Can you please help me? The equation is: 541.39(1 + i)^15 = 784.09 Penny Nom lui répond.
	Find the central angle		2009-08-18
		Larissa pose la question : In a circle, the length of a chord AB is 4 cm and the length of the arc AB is 5 cm. Find the central angle theta, in radians, correct to four decimal places. Then give the answer to the nearest degree. I think I'm supposed to use Newton's method, but am not sure how to start with this problem. Harley Weston lui répond.
	Cubic meters of gravel in a 7 ton lorry		2009-06-21
		Jackie pose la question : I have to transport gravel in a 7 ton lorry and I know how many cubic meters of gravel I need, but I need to know how many cubic meters of gravel a 7 ton lorry can hold. Thanks, Jackie Penny Nom lui répond.
	1 cubic yard of dirt = how many tons		2009-04-26
		jesse pose la question : 1 cubic yard of dirt = how many tons give the formula Harley Weston lui répond.
	What is so important about quadratics?		2008-11-29
		zoe pose la question : what is so important about quadratics? Harley Weston lui répond.
	How much sand do I order?		2008-07-15
		jackson pose la question : We would like to put 2 inches of sand down. The pool is 24 feet. How much sand will we need? The person we spoke to yesterday was talking in tons, but on these sites it is talking cubic yards or feet. Please help. We would like to get the sand ordered so we can get the pool up! Harley Weston lui répond.
	Filling a hole with sand		2008-06-05
		greg pose la question : I have a 18 ft. diameter circle and need to put 2 in. of sand in it i need to know how much sand in cubic yards and tons Harley Weston lui répond.
	The volume of a stone		2008-04-17
		sara pose la question : a rectangular tank 30 cm long and 20 cm wide is filled with water to a depth of 8 cm. When a stone was put in, the water level rose to 11 cm. Find the volume of the stone. (Assume that the stone is completely under water.) Penny Nom lui répond.
	The capacity of a silo		2008-04-12
		Candonn pose la question : I have a cement silo that is 30 ft. high and has a diameter of 12 ft. I was wondering what the capacity of the silo is in tons of dry material. The silo is flat on the bottom also. Penny Nom lui répond.
	Estimate the cube root of 270		2008-03-11
		Tom pose la question : (a) By plotting suitable graphs, estimate to one decimal place the cube root of 270. (b) With reference to your answer to part (a), use 8 iterations of a Bisection Search to refine your estimate. Use the nearest whole numbers either side of your estimate from part (a) as starting values. (c) Using either of your starting values from part (b) as first guess, use the Newton-Raphson method to find the true value of the root (to 6 decimal places). Repeat using the other starting value from part (b) and compare the two results. Harley Weston lui répond.
	A ton of carbon dioxide		2008-03-11
		claire pose la question : I want to know the size of a box if it contained a ton of Co2? Stephen La Rocque lui répond.
	A three dimensional object		2008-03-04
		Briana pose la question : what is the 3d term for pentagon? like a circle is a shhere? Penny Nom lui répond.
	Some solid figures		2008-02-28
		tiffany pose la question : What solid figure could have? It has 4 more edges than vertices, Penny Nom lui répond.
	How would one find the radius?		2007-12-29
		Ned pose la question : Given an arc with length of 192 inches (don't know chord length), and arc height of 6 inches, how would one find the radius? Stephen La Rocque and Harley Weston lui répond.
	Solve sin(x)=x^2-x		2007-12-11
		ming pose la question : is there anyway you can solve sin(x)=x^2-x without a calculator? Stephen La Rocque lui répond.
	0 = (1/t) - [ln(1+r) ln(t)]		2007-10-18
		Brandi pose la question : Objective: solve for t, where r = 0.05 0 = (1/t) - [ln(1+r) ln(t)] Penny Nom lui répond.
	How do I determine how many tons, 15 yards of top soil is?		2007-09-18
		Terry pose la question : One company is selling topsoil by the yard and another by the ton, how do I determine how many tons, 15 yards of top soil is? Penny Nom lui répond.
	How much would 3 yards of stone cost?		2007-08-21
		Sue pose la question : If it costs $13.50 a ton of 3/4" stone, how much would 3 yards of stone cost? Steve La Rocque lui répond.
	Tons of concrete		2007-07-03
		Trey pose la question : I have 300,000 square feet of concrete and want to know how to convert this to tons? Harley Weston lui répond.
	How many tons of sand?		2007-06-19
		Richard pose la question : I need to know how many tons of sand it would take to fill a container 20 feet long, 20 feet wide, and 6 inches deep. I am not sure of the makeup of the sand as far as dry, loose, wet, etc. If you could give me calculations of all the variants it would be appreciated. Stephen La Rocque and Penny Nom lui répond.
	How many tons of dirt is this?		2007-05-23
		Deb pose la question : I need to know how many tons of dirt(6 inches deep)would it take to cover 8 acres? Stephen La Rocque lui répond.
	Principia Mathematica		2007-04-12
		victoria pose la question : i need help making a poster on emilie du chatelet a great mathematician can you describe the newton principia because i know that she worked on it thanks, victoria Stephen La Rocque and Penny Nom lui répond.
	How many tons it will take to fill in this area		2007-03-29
		Amy pose la question : I have to fill an area with millings (crushed stone). The measurements are 14 foot long, 14 foot wide, and a depth of 6 inches. How do I find the square footage and how do I convert that into tons? I need to know how many tons it will take to fill in this area. Penny Nom lui répond.
	The volume of a hopper		2007-03-23
		amitesh pose la question : Let me know how to calculate the tonnage of hopper / bins / chutes of different sizes and dimensions. Penny Nom lui répond.
	x^x = 2x		2007-02-22
		ramsay pose la question : This has been bugging me for ages. How do find both real solutions to x^x = 2x? Obviously I have x=2, and there's another at about 0.35, but I can't work it out properly. Any help? Penny Nom lui répond.
	Newton meters and ft-lbs		2006-11-04
		Michael pose la question : What is the correlation between Newton meters and ft-lbs of torque? If an engine has 100ft-lbs of torque,what would that equate to in Newton meters? Stephen La Rocque lui répond.
	Computing gravity		2006-09-27
		Patricia pose la question : What is the gravity of planet z in inch/hr squared if the weight of an element with mass of 45000 oz on planet z is 2N? Stephen La Rocque lui répond.
	A hamiltonian circuit		2006-07-24
		Tom pose la question : 1)Prove that every simple not directed graph with 21 vertices and 208 edges has a hamiltonian circuit but not an Euler circuit. (I have proved that if we give the 2 edges for each vertices then after a few steps I have 21 vertices of odd degree and 19 edges.So in the end I have 2 vertices of odd degree.So I have not an Euler circuit.But how can I prove that there is a Hamiltonian one?) 2)If G is a tree and has a virtex k degree,prove that it also has at least k vertices degree 1. Penny Nom lui répond.
	I have a ditch how many tons of dirt will it take		2006-06-25
		Scott pose la question : I have a ditch 200 feet long 10 feet wide and 5 feet deep.How many tons of dirt will it take to fill it? Stephen La Rocque lui répond.
	The area of a sector and a triangle		2006-06-23
		Howard pose la question : I thought of the following problem which is similar but much simpler than the tethered goat problem: What is the angle(it is more illustrative in degrees)of arc of a unit circle so that the area between the chord it subtends and the arc length is equal to the area of the triangle with opposite side the subtended chord. Stephen La Rocque and Penny Nom lui répond.
	The interior angles of a right triangle		2006-05-20
		Greg pose la question : I am wondering if there is a way to figure out the interior angles of a right triangle if we know ONLY the side lengths, and the trick is, we CANNOT use arctangent! Leeanne Boehm and Penny Nom lui répond.
	Cubic yards of landscape stone		2006-04-19
		Janet pose la question : I need to spread landscape stone around my pool. A landscaper said I need 16 yards. What is the area of a cubic yard if I want the stone 3" deep? Stephen La Rocque lui répond.
	Square roots and inequalities		2004-10-25
		Waheed pose la question : Q1. What is the simplest way of finding a square root of any number using just a pen and paper? (I am asking this question because I browsed a few sites a didn't find any method that is simpler than the one I use. so I am just curious.) Q2. Is it possible that you take an equation and turn it into an inequality by performing same mathematical operations on both sides? Claude Tardif and Penny Nom lui répond.
	Newton's binomial theorem		2003-08-30
		William pose la question : According to page 126 of Murtha & Willard's "Statistics and Calculus" (Prentice-Hall, 1973), Newton's binomial theorem can proved inductively. I suppose that was his method, which I would like to see. Penny Nom lui répond.
	Rolling 5 sevens before rolling a six or an eight		2002-01-20
		Tony pose la question : When rolling 2 dice, what is the probability of rolling 5 sevens before rolling a six or an eight? Andrei Volodin and Penny Nom lui répond.
	Solving x - sin(x) = constant		2000-12-29
		Keith Roble pose la question : If x is in radians, how do you solve for x, where: x-sin(x) = constant? Harley Weston lui répond.
	Conversions		2000-04-23
		Tara pose la question : 750 lbs = ___ tons How do I figure this out!? I know that 1 ton is 2000 lbs, how do I figure out this answer? Penny Nom lui répond.
	Platonic Solids Surface Area		1998-12-02
		Rachel Bidwell pose la question : How do you find the surface area of the 5 platonic solids, when they each have a volume of one cubic inch Harley Weston lui répond.
	Rowing on the Charles River.		1997-09-17
		Fawwaz Muraisi pose la question : On the Charles River in Boston, the Harvard bridge and the Longfellow bridge are 1 mile apart. The MIT crew starts rowing upstream at the Longfellow bridge. As the crew passes under the Harvard bridge, the coxswain's hat falls into the river. Ten minutes later, the coxswain notices and turns the boat around instantaneously. He has t he crew row back to get it, rowing at the same constant rate. By the time the team reaches the hat, they are back at the Longfellow bridge. How fast is the river flowing? Harley Weston lui répond.

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