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pente nulle 2007-08-31
stephanie pose la question :
si la pente dune droite est nulle alors cette droite est quoi ???
Claude Tardif lui répond.
Finding the area of a regular polygon 2007-05-04
Dana pose la question :
We are trying to figure the square footage of a tetradecagon....sort of a round house with 14 sides that are 8 ft' in length. It has a height of 9 ft. How do we figure the square footage of this?
Stephen La Rocque lui répond.
A tube through a board at 45 degrees 2019-06-15
Guy pose la question :
I need to insert a tube 5/8" diameter into a board at a 45 degree angle. What size hole must I drill for the tube to fit snugly?
Harley Weston lui répond.
Pennies, nickels, dimes, and quarters 2019-05-09
william pose la question :
Ann has 177 coins (pennies, nickels, dimes, and quarters)
Her total value is $19.90
She has the same number of nickels as dimes.
She has the same number of quarters as dimes.

How many of each does she have?

Penny Nom lui répond.
Double the number of pennies each week 2019-02-28
Donald pose la question :
If I save a penny a week,double it every week,How many weeks will it take to reach 1,000,000 dollars
Penny Nom lui répond.
An open top box 2018-12-12
Kirklan pose la question :
Jeremy wants to construct an open box from an18-inch square piece of aluminum. He plans to cut equal squares, with sides of x inches, from each corner and then fold each side up to form the box. If Jeremy wants the volume of the box to be 432 cubic inches, what should the minimum length of the sides of the squares cut from each corner be? Find the volume, V, of the box as a function of x. Given: V = length × width × height.
Penny Nom lui répond.
A square and a triangle 2018-12-03
Livvy pose la question :
a square with a perimeter of 48 and a triangle with a perimeter of 38. when they are joined they make a pentagon. please find the perimeter
how can you find the perimeter of this. could you please help me?

Penny Nom lui répond.
Monthly Pension 2018-05-28
Kenneth pose la question :

Hello:

I have a question regarding how the units cancel in the following:

A company uses the following calculation to determine the monthly payment for its employees as they retire:

1.1% * average 5 years highest salary * years of service

If an employee worked 33 years and his average 5 year salary is $30,705.17, what is his monthly payment?

I used the following to determine his monthly payment, but I am not sure how the units cancel especially the years.

1.1% * $30,705.17 * 33 years divided by 12 months/year

I determined his payment as $928.83 per month, but the year units do not cancel unless the 1.1% is per year.

Is the correct calculation 1.1%/year * $30,705.17 * 33 years divided by 12 months/year so that the units cancel properly?

The $\$30,705.17$ is an average for 5 years of working. It is not $30,705.17 per year.

I thank you for your assistance.


Penny Nom lui répond.
Two regular pentagons 2018-03-19
Kip pose la question :
The ratio of the corresponding apothems of two similar regular pentagons is 5:7 What is the ratio of their areas?
Penny Nom lui répond.
A penny is thrown from the top of a building 2018-03-16
Zoraida pose la question :
A penny is thrown from the top of a 26.7-meter building and hits the ground 3.39 seconds after it was thrown. The penny reached its maximum height above the ground 0.89 seconds after it was thrown.

a. Define a quadratic function, h, that expresses the height of the penny above the ground (measured in meters) as a function of the number of seconds elapsed since the penny was thrown, t. b. What is the maximum height of the penny above the ground?

Penny Nom lui répond.
The equation of a line 2018-01-23
Gloria pose la question :
Write the equation of a line in standard form through the point (1, 6) and perpendicular to the line 2x –y = 9.
Penny Nom lui répond.
When are the hands of a clock perpendicular? 2018-01-11
Nazrul pose la question :
How many times in a day are the hands of a clock perpendicular to each other? How can I find the times? Please help me.
Penny Nom lui répond.
Needing the area of an irregular Pentagon 2017-12-06
Dale pose la question :
I'm needing to find the square footage of an irregular pentagon.
I've seen the other questions similar to this one, but without a great deal of difficulty can't get you the angle degrees, or the length between opposing angles.
I'm hoping that a different bit of information can help. So here goes:
The longest side is 67ft long.
One of its legs is 39ft long, and the other is 18ft long.
The leg off of the other end of the 39ft leg is 35ft long.
The leg off of the other end of the 18ft is 49ft long, and meets the other end of the 35ft side.
The information that I DO have, which I'm hoping makes the difference, is that the 39ft and the 18ft sides are parallel.
Also, while the angles at each end of the 67ft side are not right angles, they are fairly close to it, approximately 80 degrees at the 39 ft side corner, and 100 degrees at the 18ft side corner.

Dale.

Harley Weston lui répond.
Parallel and Perpendicular lines 2017-07-17
Karen pose la question :
Find an equation for the line with the given properties. Perpendicular to the line 7x + 2y = -6; containing the point (-2, -1)

Find an equation for the line with the given properties. Parallel to the line 5x - 3y =-6; x intercept = 3

Penny Nom lui répond.
A suspension bridge 2016-08-18
sai pose la question :
The main cable of a suspension bridge has the shape of a parabola. The cables are strung from the top of two towers, 61 metres apart, each 15.25 metres high above the roadway. The cable is 1.5 metres above the roadway at the point that is directly between the towers.

h(x)=a(x-30.5)^2+1.5
where a is the constant and its value to be determined.

a) determine the value of the constant a by using that the fact that height of the suspension cable, h(x) is 15.25 metres at each tower. Hence, write the updated model equation.

Penny Nom lui répond.
An open ball is an open set? 2016-06-23
Aqeel pose la question :
Theorem: The open ball is an open set?
Harley Weston lui répond.
A barn roof 2016-05-29
Joe pose la question :
Is it possible to build a barn roof (irregular pentagon?) with a 12' base and the other 4 sides 4' each? Thanks.
Penny Nom lui répond.
Dimes and pennies 2016-04-26
Renae pose la question :
Charity has 42 more pennies than dimes. Hope has 7 times as many pennies than dimes. Hope and Charity have the same number of dimes. Together they have $5.46. How many dimes and pennies do each have?
Penny Nom lui répond.
Pizza delivery 2016-04-03
Andrew pose la question :
Suppose you own a local pizza restaurant, Pizza with Pizzazz, and in order to compete with the big pizza chains in your area you are considering an advertising campaign offering customers a free pizza if their pizza is not delivered in 30 minutes or less. Even though your pizza restaurant is known for its fast and friendly delivery service, you are not sure if you can afford to give away too many pizzas for free. Looking over your past 12,421 pizza deliveries you find out 97% of the pizzas were delivered in 30 minutes or less.

Calculate the probability that all 100 randomly selected pizza deliveries will have been made in 30 minutes or less? Hint: Use the multiplication rule. (Round 4 decimals)

I'm really stumped on how exactly to do this problem. I don't need the answer just the steps broken down to show me how to get it! It would be gladly appreciated if you could help!

Penny Nom lui répond.
Perpendicular lines 2016-02-14
Brendon pose la question :
points A (-4; 6) , B (1;-2), C (5;-3) and D (4; 1) are given prove that AC and BD are perpendicular to each other
Penny Nom lui répond.
A pentagon inscribed in a circle 2015-05-30
Victoria pose la question :
find the area of a regular pentagon inscribed in a circle with radius 3 units
Penny Nom lui répond.
The area of a pentagon 2014-11-04
Gracie pose la question :
i really need help with this problem in my math book, will you help?

"Derrick drew regular pentagon with side lengths of 8 centimeters. He divided the pentagon into 5 identical triangles, and measured the height of one of the triangles to be 5.5 centimeters. Find the area of the pentagon."

this really makes no sense to me. Can you help me with anything to make it easier?

THANKS!!!!!

Penny Nom lui répond.
A triangular chicken pen 2014-04-27
Cierra pose la question :
Margaret has two lengths of fence, 20 meters and 24 meters, for two sides of a triangular chicken pen. The third side will be on the north side of the barn. One fence length makes a 75° angle with the barn. How many different pens can she build if one fence is attached at the corner of the barn? What are all the possible lengths for the barn side of the pen?

Not sure what they are asking here... please show step by step what to do! Thank you so much!

Penny Nom lui répond.
A parabolic suspension bridge 2014-03-11
jeffrey pose la question :
the towers of a parabolic suspension bridges 200 meter long are 40 meter high and the lowest point of the cable is 10 meter above the roadway.Find the vertical distance from the roadway to the cable at 50 meter from the center.
Penny Nom lui répond.
A circle which is tangent to two perpendicular lines 2014-03-09
MJ pose la question :
I'm a College Student taking up Bachelor of Secondary Education on Math Subject. And I'm struggling for my research about Circles. I done solving the said topic particularly on this question:

"What are the possible equations of a circle being tangent to a pair of perpendicular lines, having the origin as the Point of Intersection and the C (h, k), where h, k ∈ℤ"

But I can't get what would be the process that I must do in order to jive to my idea/goal for that problem.
Please check my idea that the numerical coefficients of the equation is equal to the radius of the circle. Thanks in advance! :)

Penny Nom lui répond.
A contest with 31 people 2013-09-06
Kevin pose la question :
There is a contest with 31 people and only one winner each week.
We play for 17 weeks.
What are the odds of winning at least one week?
The chances of winning each week are independent from previous weeks.

Robert Dawson lui répond.
Two perpendicular lines 2013-08-15
Hanna pose la question :
The problem says, "Write the equation in standard form for the line that is perpendicular to the graph of y=5x+1 with a y-intercept of 4." I have no clue how to do this. Please help me!
Penny Nom lui répond.
Drawing a pentagon 2013-05-06
jacob pose la question :
hello. i am trying to draw a template for a project. but i don't have a protractor. i'm trying to draw a normal pentagon with 2cm sides. what i'm trying to figure out is the distance in centimeters from point a, to c, in a straight line. this is needed so that i can measure and create the shape without a protractor, and keep the angles and sides correct. if you can help me with the measurement, or help me another way, any help would be greatly appreciated. thank you.
Penny Nom lui répond.
Is a line lying in a plane an open or a closed region? 2013-02-13
pardeep pose la question :
please help with this question on the open and closed intervals :: Is a line lying in a plane an open or a closed region? my teacher says it is a closed region reasoning out that it contains all it boundary points. please help how is it so?
Harley Weston lui répond.
A 5 pointed star in a circle 2012-08-05
wiljohn pose la question :
find the area of a 5 pointed star in the circle with a radius of 12.517
Chris Fisher lui répond.
John's electronic store 2012-07-25
Jora pose la question :
Electronic Store John opened an electronic store in December. During his first month, He sold 10 LCD TVs and 20 Plasma TVs. His income during that month was $12800. In January, he sold 25 LCD TVs and 40 Plasma TVs for an income of $27600. In February he projects to sell 30 LCD TVs and 50 Plasma TVs. If John expenses are $28900 in February, how much money will he have after paying the expenses?
Penny Nom lui répond.
Drawing an isosceles triangle 2012-05-10
Nazrul pose la question :
How can I draw an isosceles triangle whose each angle adjacent to the base is twice the vertex angle?
Chris Fisher lui répond.
The period T of a pendulum 2012-03-27
Ashley pose la question :
The period T of a pendulum is given in terms of its length, l, by T=2pi sqrt(l/g) where g is the acceleration due to gravity(a constant)
a. find dT/dl
b. what is the sign of dT/dl
c. what does the sign of dT/dl tell you about the period of the pendulums?

Penny Nom lui répond.
A suspension bridge 2011-11-30
jennifer pose la question :
suspension bridges like the golden gate bridge, are used to span large distances. when the main curved cables are attached to the deck by vertical cables they will end up in the shape of parabola. assume that we need to build a bridge that spans 2,400 feet. the two towers 165feet tall each where placed at 400feet from either side. the lowest point of the center of the bridge at 10feet. vertical suspension cables where placed at 25foot interval. how many feet of cable are needed to connect the deck to the main cables between the two towers? show all working.
Penny Nom lui répond.
The interior angles of a pentagon 2011-03-10
Daima pose la question :
I need help!
The interior angle of a pentagon i s5 ( I hope ) or 540 degrees.
The interior angle of a pentagon is what? Explain to me please.

Daima

Penny Nom lui répond.
Two perpendicular chords 2010-09-11
edwin pose la question :
two perpendicular chords AB and CD intersect at P. if X,Y are their midpoints and M the centre of the circle, prove that MP=XY. I do not a have clue on how to do it so can you please help me with it
Robert Dawson lui répond.
Differentiable on an interval 2010-08-12
Dave pose la question :
Hi I was wondering if a function can be differentiable at its endpoint. For example if I have Y = X^2 and it is bounded on closed interval [1,4], then is the derivative of the function differentiable on the closed interval [1,4] or open interval (1,4). They always say in many theorems that function is continuous on closed interval [a,b] and differentiable on open interval (a,b) and an example of this is Rolle's theorem. Thank you for your help.
Robert Dawson lui répond.
The suspension cables of a bridge 2010-07-29
Mike pose la question :
what is the formula for the suspension cables of a bridge. The towers are 200 ft above the roadway The towers are 3400 ft apart The cable if at 8ft in the middle of the span
Robert Dawson lui répond.
The capilano suspension bridge 2010-06-03
nida pose la question :
the capilano suspension bridge in north vancouver is the world's highest footbridge of its kind. the bridge is 140m long . from the ends of the bridge the angles of depression of a point on the river under the bridge are 41 degrees and 48 degrees. how high is the bridge above the river to the nearest metre
Penny Nom lui répond.
Two adjacent rectangular dog pens 2010-03-01
Janet pose la question :
Clint is constructing two adjacent rectangular dog pens. Each pen will be three times as long as it is wide, and the pens will share a common long side. If Clint has 65 ft of fencing, what are the dimensions of each pen?
Penny Nom lui répond.
A regular pentagon 2009-12-14
Jamie pose la question :
A regular pentagon is inscribed in a circle of radius 4.5 cm. Determine its perimeter and area to one decimal place!

Thank YOU ! :)

Penny Nom lui répond.
Two adjacent pig pens 2009-12-04
alysia pose la question :
A pig farmer wants to build two adjacent pens using 96 feet of fencing. He wants rectangular pens that share the short side and the overall length is to be six more than twice the width. What should be the dimensions of the overall pen?
Penny Nom lui répond.
Two similar pentagons 2009-11-16
louis pose la question :
The lengths of five sides of a pentagon are 1,3,5,7,and 12 units. If the length of the longest side of a similar polygon is 18 units, find the perimeter of the larger pentagon. I think I figured it out Not sure though.
Penny Nom lui répond.
Pennies and dimes 2009-11-11
Rachel pose la question :
Kesha had only pennies and dimes in her change purse. When she counted out her change she had 64 cents/ of she had 6 times as many pennies as she did dimes, how many pennies did she have? Write equation and solve it.

Can someone help me with this?

Penny Nom lui répond.
The extended real numbers 2009-11-02
Justin pose la question :
Hello there, I was wondering is the set of extended real numbers a closed set or an open set?

Justin

Robert Dawson lui répond.
Is it a rectangle? 2009-10-29
sefora pose la question :
The coordinates of the vertices of quadrilaterals are given. Draw each quadrilateral on a grid. Determine whether it is a rectangle (show your work)

P(5,1), Q(-4,4), R(-6,-2), S(3,-5)

Penny Nom lui répond.
Two non zero vectors 2009-10-27
Nazrul pose la question :
Given that a and b are two non zero vectors and ma+nb=0 where m and n are two scalars. How can I prove that m=n=0.
Robert Dawson lui répond.
Pennies, nickels and dimes 2009-09-22
Kiadadh pose la question :
Show 12 ways to come up with 28 cents using only pennies, nickles and dimes
Robert Dawson lui répond.
Toss a coin and roll a die 2009-09-21
Celeste pose la question :
Can you please tell me how to set up this problem to find the answer. I know they are independent from there I don't know. a coin and a regular six-sided die are tossed together once. What is the probability that the coin shows a head or the die has a 5 on the upward face?
Penny Nom lui répond.
An area problem 2009-08-30
Amber pose la question :
Area of hexagon ABCDEF with the vertices (3,0) (7,0) (9,2) (7,4) (3,4) (1,0)
Harley Weston lui répond.
A pentagon inscribed in a circle 2009-07-29
Faisal pose la question :
O is the center of the circle. Sides AB and AE are equal. Angle B = 95, angle C = 130, angle D = 138. Find angles A and E. Diagram is attached. Best, Faisal
Chris Fisher lui répond.
Buying pens and staplers 2009-07-22
Ellen pose la question :
one more math question,
six pens and four staplers cost $7.10. four pens and seven staplers cost $9.50 find the cost of one pen and one stapler.

Penny Nom lui répond.
Finding the Line Joining Perpendicular Feet 2009-07-16
mukulu pose la question :
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.
Janice Cotcher lui répond.
The product of gradients between 2 perpendiculars lines 2009-06-11
Alister pose la question :
how do i prove that the product of gradients between 2 perpendiculars lines equal to -1....
Penny Nom lui répond.
Probability of Two Independent Events 2009-06-07
Sharon pose la question :
A basketball player is given 2 freeshots, if the probability of making 1 of the 2 shots is 3/4 what is the probability of making 2 of the 2 shots or both shots?
Janice Cotcher lui répond.
Perpendicular lines 2009-05-07
shabnam pose la question :
the line presented by y= 3x-2 and a line perpendicular to it intersect at R(1,1). Determine the equation of the perpendicular line
Stephen La Rocque lui répond.
15 pigs in 4 pens 2009-04-22
Melissa pose la question :
A farmer has 15 pigs. He wants to put them all into 4 pens, have an odd number of pigs in each pen, and have no pigs left over. Also, he isn't thinking about having any for dinner, as they are his pets.
How does he do it?

Robert Dawson lui répond.
A perpendicular line in standard form 2009-04-21
Kristy pose la question :
Can you help me with this equation? Find the equation, in standard form of the line perpendicular to 2x-3y=-5 and passing through (3,-2) With the equation in standard form with all integer coefficient.
Stephen La Rocque lui répond.
The interior angles of a pentagon 2009-04-20
Mary pose la question :
If four interior angles of a five-sided figure pentagon measure 100 degrees each, what will the fifth angle measure?
Harley Weston lui répond.
Parallel and perpendicular lines 2009-04-08
Blake pose la question :
I need to know what the formula for working a problem. I need to know how to find if i line is parallel or perpendicular by only looking at the equation. i know you must know the slope but how do i find slope?
Stephen La Rocque lui répond.
The perimeter of a pentagon 2009-04-07
Malysa pose la question :
A pentagon has an area of 1400 cm squared. Determine its perimeter.
Harley Weston lui répond.
Dependent & Independent Events 2009-03-06
maci pose la question :
what is the probablility of drawing at random 2 blue marbles in a row if there is 3 red,4 green,2 yellow,and 5 blue marbles?
Janice Cotcher lui répond.
Symmetries of a polyhedron 2009-03-02
Vincent pose la question :
I want to ask is there a formula to find out the number of axes of rotation & plane of reflection of a 3D figure, like pentagon, pyramid?
Chris Fisher lui répond.
Augmented matrix: independent, dependent, or inconsistent? 2009-02-23
Anna pose la question :
Perform row operations on the augmented matrix as far as necessary to determine whether the system is independent, dependent, or inconsistent.

x + y + z = 11
x - y + 3z = 5
2x + 2y + 2z = 15

Harley Weston lui répond.
Time in a Swing 2009-02-22
Barb pose la question :
I looked at the questions concerning a pendulum as I know I need to use this formula but I am stiil not able to figure this problem out. Can you help? If a child is on a swing with a 10 foot chain, then how long des it take to complete one cycle of the swing? I know I am suppose to use the formula 8T^2 = pi^2 L but I do not understand how to do this. Thanks
Janice Cotcher lui répond.
A line is perpendicular to another line 2009-01-16
Greg pose la question :
A line is perpendicular to the line y=2x+3 and has the same x-intercept as x+3y+10. Find the equation of this line. Express your answer in the form of y=mx+b. Justify your answer.
Robert Dawson lui répond.
A kennel with 3 individual pens 2009-01-06
Jean pose la question :
An animal clinic wants to construct a kennel with 3 individual pens, each with a gate 4 feet wide and an area of 90 square feet. The fencing does not include the gates. Write a function to express the fencing as a function of x. Find the dimensions for each pen, to the nearest tenth of a foot that would produce the required area of 90 square feet but would use the least fencing. What is the minimum fencing to the nearest tenth?
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.
A word problem about a regular pentagon 2008-11-16
Sandra pose la question :
If the area of a regular pentagon is A=1.720a^2, in which a is one of the sides. Find the area of a regular pentagon with a side that measures 50cm.
Chris Fisher and Penny Nom lui répond.
Purchasing pens and pencils 2008-11-07
Maggie pose la question :
A mechanical pencil costs 50 cents and a pen costs 25 cents. If I spend 5.00 on 17 pens and pencils, how many of each does that buy?
Penny Nom lui répond.
Perpendicular lines 2008-10-16
Hailey pose la question :
In the xy-plane, the line with equation 2x + y = 3 is perpendicular to the line with equation y = mx + b, where m and b are constants. What is the value of m?
Penny Nom lui répond.
Bags of pennies 2008-10-11
paul pose la question :
jenny divided 15 pennies among 4 money bags.she could then pay any amount from 1p to 15p just by giving bags.how many pennies did jenny put in each bag?
Penny Nom and Victoria West lui répond.
Lines that pass through a point 2008-09-30
Abigail pose la question :
what is the name for a point that a group of lines pass through that contains the letters c e n p i l?
Penny Nom lui répond.
Perpendicular 2008-09-08
amanda pose la question :
hi my name is amanda medjuck i am in grade 7. we are learning basic geometry terms and have to define words BUT I DONT KNOW WHAT A PERPENDICULAR LINE IS PLEASE HELP ME!!!
Penny Nom lui répond.
Parallel and perpendicular lines 2008-09-06
C pose la question :
Can you help me determine whether these lines are parallel, perpendicular or neither and why?

Problem 1: y=3x+2
y=1/3x - 4

Problem 2: y=1/3x + 1/2
y=1/3 x -2

Penny Nom lui répond.
Cost of pencil is rising every year since 7 years ago 2008-08-06
Mari pose la question :
Cost of pencil is rising every year since 7 years ago. If the cost of pencil last year was 60 cents which is the sum of the cost from the last two previous years, what is the cost of the pencil now, the cost seven years ago.
Penny Nom lui répond.
A five-sided coin 2008-06-29
carla pose la question :
A new five-sided coin is to be made in the shape of figure 8.6 The point A on the circumference of the coin is the centre of arc CD, which has a radius of 2cm Similarly B is the centre of arc DE, and so on. Find the area of one face of the coin.
Harley Weston lui répond.
A jar of pennies 2008-06-18
Ryan pose la question :
if you are given a jar of pennies and you had to find the weight of one penny without opening the jar.when you graph it, You have to y= the mass of the container and x= number of coins you use the slope to find the weight of the penny how would u go about doing that?
Stephen La Rocque lui répond.
A line which is perpendicular to another line 2008-06-18
Emily pose la question :
How do you solve perpendicular bisectors with a slope and a point?
Penny Nom lui répond.
Double one penny for 30 days 2008-06-11
kerwin pose la question :
one penny doubled for 30 days what is the answer?
Penny Nom lui répond.
The area of a regular pentagon 2008-06-02
Jenna pose la question :
I would like to know if there is a formula to find the area of a regular Pentagon that is not inscribed in a circle only apothem and side length are given.
Penny Nom lui répond.
The angles of an irregular pentagon 2008-05-20
victoria pose la question :
The sum of the measure of two angles is 240. If the remaining angles are congruent, what is the measure of each angle?
Penny Nom lui répond.
An open box 2008-04-23
Le pose la question :
Metal Fabrication; If an open box is made from a tin sheet 8 in square by cutting out identical squares from each corner and bending up the resulting flaps, determine the dimensions of the largest box that can be made.
Harley Weston lui répond.
The area of an irregular pentagon 2008-04-02
shane pose la question :
i Need to find out what this adds up to i have a diagram of a pentagon and all the shides are different how do i do this if the sides are 5100,7200,7200,7400,7400
Harley Weston lui répond.
A fish tank in the shape of an irregular pentagon 2008-03-29
richie pose la question :
i am building a fish tank. it is going to be an irregular pentagon. the sides are going to be
24"
24"
8"
8"
32"(approximately)

there will 3 right angles A, B, E

my question is how to figure out the degree of the angles that are not right angles (C,D)?

Chris Fisher lui répond.
A pentagon inscribed in a circle 2008-03-19
Elaine pose la question :
My question as written on my homework is: Given a pentagon inscribed in a circle of radius r, determine a) the angle between any two sides of the pentagaon b) the perimeter of the pentagaon c) the area of the pentagon. I know this kind of counts as three questions, so if you can only answer one, that's okay. Any help will be much appreciated. Thanks!
Stephen La Rocque lui répond.
Two perpendicular lines 2008-03-07
Daphne pose la question :
Does anyone know how to find a line perpendicular to -3x=4y=20 and passes through the point (-12,0)?
Stephen La Rocque and Penny Nom 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.
Two regular pentagons 2008-02-27
Shirley pose la question :
Regular pentagon QRSTU has a side length of 12 centimeters and an area of 248 square centimeters. Regular pentagon VWXYZ has a perimeter of 140 centimeters.

I need to find its area.

Stephen La Rocque lui répond.
A square and an equilateral triangle 2008-02-10
Emily pose la question :
A square pen and a pen shaped like an equilateral triangle have equal perimeters. Find the length of the sides of each pen if the sides of the triangular pen are fifteen less than twice a side of the square pen.
Stephen La Rocque lui répond.
A dependent variable 2008-01-30
lavada pose la question :
i need the definition to dependent variable
Stephen La Rocque lui répond.
How many houses must they paint? 2007-12-12
Natalie pose la question :
The question is: Four boys work together,painting houses for the summer.For each house they paint they get 256 pounds. If they work for four months of the summer and their expenses are 152 pounds per a month, how many houses must they paint for each of them to have one thousand pounds at the end of the summer?
Penny Nom lui répond.
A triangle and a pentagon 2007-12-08
Olivia pose la question :
A regular pentagon has an area of 800 square centimetres. What is the area of the triangle extended from one side of the pentagon?
Stephen La Rocque lui répond.
Proving a quadrilateral is a rhombus 2007-12-03
Jeanie pose la question :
How do you prove that a quadrilateral is a rhombus because the diagonals of the quadrilateral are perpendicular and bisect each other using the 2-column proof method?
Stephen La Rocque lui répond.
Chris has twice as many $1 bills as pennies 2007-11-02
vicky pose la question :
Chris has twice as many $1 bills as pennies, twice as many dimes as he has $10 bills, and twice as many pennies as he has dimes. How much money does he have?
Penny Nom lui répond.
Convert a diameter of a pencil into centimeters 2007-11-02
Kaitlyn pose la question :
I need to convert a diameter of a pencil into centimeters, but how many diameters are in a centimetres? Thanks =)
Penny Nom lui répond.
The area of a regular pentagon 2007-11-01
sarah pose la question :
i'm trying to find the area of a regular pentagon with 200m sides, ive split it into 5 triangles so i dont know either sizes of the lengths and i need to find the height! how?
Penny Nom lui répond.
Parabolic suspension bridge 2007-10-09
Jessica pose la question :
A suspesion bridge with weight uniformly distributed along its length has twin towers that extend 75 meters abouve the road surfce and are 400 meters apart.The cables are parabolic in shape and are suspended from the tops of the towers. The cables touch the road surface at the center of the bridge. Find the height of the cables at a point 100 meters from the center. (Assume that the road is level.)
Stephen La Rocque lui répond.
Doubling every day 2007-10-07
Jerrie pose la question :
Patti saved pennies for 10 days. The first day she saved 1 cent. Every day after that she saved twice as much as the day before. How much money did Patti save altogether?
Stephen La Rocque lui répond.
Equation of a circle circumscribing a triangle with given vertices 2007-10-01
Randy pose la question :
How do I determine the equation of a circle when it is circumscribed by a triangle whose vertices are (-1, 6), (3, -2), and (2, 5)?
Stephen La Rocque lui répond.
Finding equations, intersection point of two lines at right angles 2007-09-22
Yaz pose la question :
Find the equation of the line joining A(-1,-9) to B(6,120). Another line passes through C(7,-5) and meets AB at rigth angle of D. Find the euation of CD and calculate the co-ordinates of D.
Stephen La Rocque lui répond.
Perpendicular lines 2007-09-06
dinesh pose la question :
we know that for two perpendicular lines m1*m2=-1perpendicular but this is not true for x-axis and y-axis?
Harley Weston lui répond.
Area and perimeter 2007-08-16
sheryl pose la question :
a 50*70 horse pen is 240 feet and 3500 square feet a 60*60 horse pen is 240 feet and 3600 square feet why is there a 100 square feet difference?
Penny Nom lui répond.
How many pennies will a half gallon bottle hold? 2007-08-11
Harold pose la question :
How many pennies will a half gallon bottle hold
Penny Nom lui répond.
All five angles of a pentagon ABCDE are equal 2007-08-04
Jerry pose la question :
All five angles of a pentagon ABCDE are equal. The diagonals AC, AD and BD have the same length. Prove that all five sides of the pentagon are equal in length.
Penny Nom lui répond.
Find the area of a regular pentagon inscribed in a circle 2007-08-03
Tracy pose la question :
Can you please help me with finding the area of a regular pentagon inscribed in a circle using the Pythagorean theorem. The radius of the circle is 5 cm and each side AB = BC = CD = DE = EA = 6 cm.
Stephen La Rocque, Leeanne Boehm and Chris Fisher lui répond.
Equation of a perpendicular line 2007-07-28
Marina pose la question :
Find the equation, is standard form, with all integers coefficients, of the line perpendicular to x+3y=6 and passing through (-3,5)
Stephen La Rocque lui répond.
Area of a star in a regular pentagon with side length 10cm 2007-07-24
Chetna pose la question :
A regular pentagon with side 10 cm has a star drawn within (the vertices match). What is the area of the star?
Stephen La Rocque lui répond.
Area of a pentagonal lot 2007-05-09
Mimi pose la question :
I would like to know the square footage of a pentagon with the following measurements: Property is .43 of an Acre Front: 57.11' NW: 105.78' S: 120' SE: 145' E: 102.86' I don't want you to try to show me how to work thru the problem since I will never comprehend it. For some reason, I am unable to perform these kinds of equations. I will greatly appreciate your help.
Penny Nom lui répond.
Finding out if two line equations are parallel or perpendicular 2007-04-28
Vincent pose la question :
Can you determine if the two lines are parallel, perpendicular, or neither 1/2x+4y=3/5 y/1 + 10/5= 8x I think there perpendicular but how would you solve the equations
Stephen La Rocque lui répond.
The area of an irregular pentagon 2007-04-14
Steven pose la question :
I have been given a coursework in which i have to investigate various shapes to find the one that would give the largest area with 1000m perimeter. I'm stuck in a part where i have to calculate the area of a irregular pentagon. i don't know where to start from. I can make up the length of all the sides (5 sides), so long they add up to 1000, but i'm not quite sure what to do after that.
Penny Nom lui répond.
Reducing the over all size of a irregular pentagon 2007-04-11
Gilbert pose la question :
I'm having trouble figuring out how to reduce the over all size of a irregular pentagon. The pentagon I'm trying to reduce has 2 right angles adjacent to each other. Basically the shape of a house. I have width, length of the legs and the height of the peak. But cannot figure out how to get the size of a reduced version that keeps the same proportion and angles. Thanks Gilbert
Penny Nom lui répond.
An irregular pentagon 2007-04-11
reg pose la question :
Hi, i have been given an irregular pentagon in which i have to work out the area. I have been told to make three triangles and then work out the area of these triangles and then add them up.

I require your help because i have the length of two sides of one of the triangle - how do i work out the other side?

I have not been provided with any angles - can i make the angles up?

Penny Nom lui répond.
Slopes of perpendicular lines 2007-03-27
Mykolyn pose la question :
How do you find the slope of a line that is perpendicular to the graph of: y= -1/2x+4?
Leeanne Boehm and Sara Ulmer lui répond.
The area of an irregular pentagon 2007-03-26
grace pose la question :
hi I am doing graphics and need to find the area of the section given to us (it is just drawn). the sides measure 15m, 35.4m, 5m, 17.8m, 35.7m. the angle between the 15m side and the 35.4m side is 17degrees, the angle between the 35.4m side and the 5m side is 73degrees. the angle between the 5m side and the 17.8m side is 151degrees, the angle between the 17.8m side and the 35.7m side is 90degrees and the angle between the 35.7m side and the 15m side is 95degrees. if you could tell me the area i would be extremely grateful. thanks very much.
Penny Nom lui répond.
A line that is perpendicular to another line 2007-03-16
Jesse pose la question :
How do you write an equation of a line that is perpendicular to y+2x+3 and passes through (3,4); I don't understand the steps of how to do this????
Stephen La Rocque and Penny Nom lui répond.
The period of a simple pendulum 2007-03-10
Melissa pose la question :
The period of a simple pendulum of length L feet is given by: T=2pi(sqrt(L/g))seconds. It is assumed that g, the acceleration due to gravity on the surface of the earth, is 32 feet per second per second. If the pendulum is a clock that keeps good time when L=4 feet, how much time will the clock gain in 24 hours if the length of the pendulum is decreased to 3.97 feet? (Use differentials and evaluate the necessary derivative at L=4 feet.) Answer is in seconds. Melissa
Penny Nom lui répond.
A truncated cone 2007-03-10
Russell pose la question :
Hello, I have attempted to use two of your answers already given and had no real success. This young lady is making a cat food dispenser using a truncated cone. The top of the cone as a diameter of 5 inches with a height of 6 1/2 inches and diameter of 3 inches for the bottom.

Could you please map out a solution for the both of us to understand? Thank you so much for your time and for this wonderful service.

Russell

Penny Nom lui répond.
An irregular pentagon 2007-03-08
kelly pose la question :
If I have a pentagon with 2 sides of length 5 and one with a length of 2, what are the lengths of other 2 sides?
Stephen La Rocque lui répond.
The net for a pentagonal pyramid 2007-03-05
MaKayla pose la question :
How many bases does the net for a pentagonal pyramid have?
Penny Nom lui répond.
A pentagon inscribed in a circle 2007-02-22
Amanda pose la question :
Find the formula for calculating the length of the side of a pentagon given the radius of the circle that encloses it. Once you find the formula, find the length of the side of a pentagon which is enclosed in a circle 12 cm in diameter. So I need to know the formula, and the length of the side of the pentagon. Thank you!!
Penny Nom lui répond.
The area for a pentagon 2007-02-09
nicole pose la question :
how do you find the area for a pentagon
Stephen La Rocque lui répond.
Splitting a 5 acre piece of property 2007-01-25
John pose la question :
I have a 5 acre piece of property that I wish to split into 5 individual 1 acre parcels. The 5 acre parcel 1s 660 feet in length and 330 feet in width. The first two parcels are 264'x165', but I am asking for help getting the perimeters of the last 3 lots, one of which is a irregular pentagon. All of the one acre parcels must have an area of 43,560 square feet each.
Penny Nom lui répond.
A regular pentagonal pyramid 2007-01-25
Vickifazio pose la question :
a regular pentagonal pyramid has a base perimeter of 1,085 ft. How long is one side of the base?
Stephen La Rocque lui répond.
A line perpendicular to another line 2007-01-13
Dusty pose la question :
Find an equation for the line perpendicular to: 3x - 4y + 1 = 0 passing through (4,7)
Leeanne Boehm and Penny Nom lui répond.
21 pigs and only 4 pig pens 2007-01-11
Emma pose la question :
i was given this pig pen problem. if there are 21 pigs and only 4 pig pens how can you distribute the pigs into the pens and have an odd number of pigs in each pen. it doesn't seem possible to me. i need help!
Haley Ess lui répond.
How do the perimeters of the two pentagons compare? 2007-01-02
Robert pose la question :
If the area of one pentagon is eighty-one times the area of another pentagon, how do the perimeters of the two pentagons compare?
Penny Nom lui répond.
Parallel and perpendicular lines 2006-12-07
Valeria pose la question :
I m having trouble with parallel and perpendicular lines a problem i need help with is y=6 find the slope if al line parallel to the graph of each equation
Stephen La Rocque lui répond.
Bill has four more dimes than nickels ... 2006-11-05
Allison pose la question :
bill has four more dimes than nickels, and seven fewer nickels than pennies.he has a total of $3.35. how many of each kind of coin has he?
Karen McIver lui répond.
The area of regular pentagon inscribed in a circle 2006-10-12
Admire pose la question :
i need help on how to find area of regular pentagon inscribed in a circle of radius 8cm
Stephen La Rocque and Penny Nom lui répond.
Family of lines 2006-09-29
Sasha pose la question :
could a "Family of Lines" have both parallel and intersecting equations that aren't related directly but otherwise related by each other to create a curve
Chris Fisher lui répond.
The velocity of a pendulum, part II 2006-09-07
Erin pose la question :
We saw the question in your database about the velocity of a pendulum swinging.....It is the same exact question....but there is another question......it says....

"estimate the instantaneous rate of change of d with respect to t when t = 1.5. At this time, is the pendulum moving toward or away from the wall? Explain."

Harley Weston lui répond.
$10.00 worth of pennies 2006-08-30
Amelia pose la question :
IF YOU MADE A LINE WITH $10.00 WORTH OF PENNIES, HOW LONG WOULD THE LINE BE?
Stephen La Rocque and Penny Nom lui répond.
Building an octagon-shaped deck 2006-07-11
Maurice pose la question :
I'm a landscaper and one of my customers wants me to build her an octagon shaped deck in the back yard that has a measurement of 16 by 16. I'm not sure of the way to measure for materials required. It will be built with 2 by 6 lumber with a half inch spacing between the 2 by 6.
Stephen La Rocque lui répond.
The area of a pentagon 2006-05-11
Jessica pose la question :
i have to find the area of a pentagon ABCDE whose vertices are A (-2,-5), B (-2,2),C(2,4), D(5,2) and E(4,-2)
Stephen La Rocque lui répond.
A fence around a pen 2006-03-30
Daryl pose la question :
I hope you can help me out with the attached problem, It has been driving me crazy.
Stephen La Rocque and Penny Nom lui répond.
The area of a pentagon 2006-02-01
Edward pose la question :
I am working on finding the Sq. ft of a pentagon. I saw another question like it but I am lost. I have a pentagon that is 6ft on every side what is the Sq Footage of that pentagon?
Penny Nom lui répond.
An array of pennies by year 2005-12-29
Sheila pose la question :
What is an array? How do you create an array using 100 pennies by years?
Penny Nom lui répond.
Josh and John were both exposed to the flu 2005-12-16
Dudley pose la question :
Josh and John were both exposed to the flu. John has a 25% chance of getting it, while Josh has a 75% chance of getting it. What are the chances that at least one of them has the flu?
Penny Nom lui répond.
Can we take the derivative of independent variable 2005-10-18
Mussawar pose la question :
why we take derivative of dependent variable with respect to independent variable .can we take the derivative of independent with respect to dependent.if not why.
Walter Whiteley lui répond.
Open dots and closed dots 2005-09-29
Cynthia pose la question :
When graphing the solutions of an inequality, what is the difference between an open dot and a closed dot?
Penny lui répond.
The area of a pentagon 2005-08-24
Susan pose la question :
I need to calculate the square footage of a regular pentagon (all angles are equal). Each side is 16 feet long.
Penny Nom lui répond.
An irregular pentagon 2005-02-23
Tony pose la question :
Please help me with confirming the area in square footage of the irregular pentagon

My Name is Tony and I am working on understanding the square footage as calculated in the drawing. I also believe this is a secondary level question.

I saw the example http://mathcentral.uregina.ca/QQ/database/QQ.09.03/dana2.html and would appreciate how you worked through the problem, but couldn't find the calculations so that I could adapt them to my sizes.

Penny Nom lui répond.
The area of a pentagon 2004-06-06
Dana pose la question :
HELLO, I NEED HELP IN DETERMINING THE SIZE OF A PENTAGON.

one side is 280',from both ends of the 280 'section,we have 300' lengths,from one of these 300' sections we have a 118' length,which goes over to a length of 228',will this be enough info. or should i provide more. thanks

Penny Nom lui répond.
Sum of the angles in a pentagon 2004-03-11
Ashish pose la question :
What is the sum of all the measures of the angles of a Pentagon
Penny Nom lui répond.
Arrays of pennies 2004-01-17
Kathleen pose la question :
How do I create an array of 100 pennies?
Penny Nom lui répond.
Lines 2003-11-14
A student pose la question :
What is a name that a group of lines pass through?
Chris Fisher lui répond.
An array of pennies 2003-05-23
Saundra pose la question :
If you have 100 pennies and you are suppose to make an array do you arrange the pennies by date?
Penny Nom lui répond.
Profit for a dance studio 2003-04-28
Craig pose la question :
A dance studio charges $80 per student for a series of 2 hour lessons. The studio's costs are $30 per hour for the instructor, $15 per lesson for the room rental, and $3 per student for miscellaneous expenses. If x is the number of students enrolled in the class, express the studio's profit P(x) in terms of x. Find the profit if 10 students are enrolled in the class.
Penny Nom lui répond.
A penny, a nickel, a dime, a quarter, and a loonie 2003-01-21
Blaine pose la question :
I have 5 coins: a penny, a nickel, a dime, a quarter, and a loonie. How many different amounts of money could I pay using any combination of these coins?
Penny Nom lui répond.
Collinear Points 2003-01-13
Gary pose la question :

Which of the 4 points are collinear when you construct the following concurrent lines or rays of a triangle?

  1. P(1), the point where the angle bisectors intersect.
  2. P(2), the point where the altitudes (or extensions) intersect (inside or outside of the triangle).
  3. P(3), the point where the medians intersect.
  4. P(4), the point where the perpendicular bisectors (or extensions) of the three sides of a triangle intersect.


This is for my 9-12 high school class in geometry.
My name is Gary


Thanks for your help.
Gary


Harley Weston and Chris Fisher lui répond.
Constructions of polygons 2003-01-03
Garrett pose la question :
Our teacher just finished the constructions unit, and he mentioned briefly about odd sided figures such as pentagons and septagons, only that they're very hard. My question is, how do you draw, with a compass and a straight edge, a pentagon and septagon?
Chris Fisher lui répond.
Construct a pentagon 2002-12-12
Mary pose la question :
We were wondering what the instructions/formula, step-by-step, is to make a pentagon.
Chris Fisher and Penny Nom lui répond.
Probability 2002-08-16
Chris pose la question :

There are two possible outcomes for a random event, A and B.

The probability of A being the outcome is 63%, and B 37%.

What is the likelihood that B will be chosen twice, consecutively? Three times, ten?


Andrei Volodin lui répond.
Pigs in pens 2002-07-10
Shannon pose la question :
A farmer has 21 pigs and 4 pens, he must put an odd number of pigs in each pen, how does he do it?
Penny Nom and Chris Fisher lui répond.
Normal lines 2001-12-11
Kristie pose la question :
Why are perpendicular lines called normal lines?
Chris Fisher lui répond.
A polygon with five sides 2001-10-03
A student pose la question :
I was asked a question in 5th grade today that goes: i am a polygon with five sides and 2 right angles what do i look like and what is my name
Penny Nom lui répond.
Intersection of perpendicular cylindrical surfaces 2001-07-31
Charlie pose la question :
Please consider two right circular cylinders, perpendicular one to the other, and of unlike radii in a 3 dimensional Cartesian space with mutually perpendicular x,y,z axes. If one cylinder is centered on the y axis with radius ra, and the other on the z axis with radius rb, then the expression for the first surface would be x2 + z2 = ra2, y = any number. Likewise, the second cylinder's surface would be x2 + y2 = rb2, z = any number.

It is my intent to define the curve at the intersection of these two cylindrical surfaces. From sketching the conditions it appears that this intersection resembles an ellipse folded about its minor axis.


Chris Fisher lui répond.
Marginal Propensity to Consume 2001-05-09
Esther pose la question :
The derivative of the national consumption function C = f(y) is called the ____________________.
Judi McDonald lui répond.
Area of a regular polygon 2001-05-01
Carl pose la question :
What is the formula for finding the area of a regular Hexagon and a regular Pentagon
Penny Nom lui répond.
A lemon and a recall 2001-04-25
Katie pose la question :
A Man has two cars, a recall and a lemon. The probability that the recall starts is 10%. The proabability that the lemon will start is 5%.

What is the proabability that both cars will start?


Andrei Volodin lui répond.
Hexominos 2001-04-05
Tom pose la question :
What is a hexomino and how many different shapes are possible?
Harley Weston lui répond.
A suspension bridge 2001-03-24
Janna pose la question :
The cables of a suspension bridge hang in a curve which approximates a parabola. The road bed passed through the vertex. If the supporting towers are 720m apart and 60m high, find:

a) an equation of the parabola (it's y = 1/2160x2)

b)the height of the cables at a point 30m from the vertex. I substituted 30 in for the x value and got 0.42 and the answer is 42. What did I do wrong?
Denis Hanson and Claude Tardif lui répond.

Kinds of lines 2001-02-09
Robyn pose la question :
What are the different kinds/types of lines?
Leeanne Boehm lui répond.
An irregular polygon 2001-02-09
Jason pose la question :
I have a 5 sided irregular polygon I am trying to figure out the area of. There are no right angles in the polygon as far as I can tell. I do not know any angles.
Chris Fisher lui répond.
A dollar, quarter, dime, nickle and penny 2001-01-07
Sarah pose la question :
Arnold has a dollar coin, one dime, one quarter, one nickel, and a penny. The number of different sums of money that can be formed using three coins is...
Penny Nom lui répond.
Is this a right triangle? 2000-12-08
Alicia pose la question :
How would you set-up and answer a problem like these one? Triangle ABC has vertices A(-2,2), B(1,-2), and C (1,2). Use slopes to determine if the triangle is a right triangle.
Penny Nom lui répond.
Bridges and parabolas 2000-11-18
Lauren pose la question :
My name is Lauren, and Im a secondary school student in Ontario. For my gr11 advanced math class I have to find out how and why parabolics are used in arch bridges and write 3 paragraphs on it. People who cohse satelites and whatnot are lucky - I've found a ton of info, but for arch bridges there seems to be nothing.
Harley Weston lui répond.
Connecting to a water line 2000-10-20
Vanja pose la question :
My question is...A house is to be connected to a new water main that runs along the line y=2/3x-1. The connection point at the house has coordinates (2,9), where the units represent metres. What lenght of plastic pipe is needed to connect to the water main at the closest point?
Penny Nom lui répond.
Independent tests 2000-10-07
A student pose la question :
If the false-positive rate of each test in a battery of tests is 0.05, how many independent tests can be included in the battery if we want the probability of obtaining at least one false-positive result to be at most 0.2?
Harley Weston lui répond.
Velocity of a pendulum 2000-08-28
Mekca pose la question :
A pendulum hangs from the ceiling. as the pendulum swings, its distance,d cm, form one wall of the room depends on the number of seconds,t, since it was set in motion. assume that the equation for d as a function of t is: d=80+30cos3.14/3t, t>0.

estimate the instantaneous rate of change of d at t=5 by finding the average rates for t=5 to 5.1, t=5 to 5.01, and t=5 to 5.001.


Harley Weston lui répond.
Parallel and perpendicular lines 2000-05-08
Jimmy Lumpkins pose la question :
Need a method for solving the following problem: Find the equation of a line through point P that is parallel or perpendicular to another line.
Paul Betts lui répond.
An expected value 2000-04-24
Carl Pride pose la question :
Suppose that in a statistics class of size 23, each student has a probability of passing of 73 percent.

sample:

What is the expected number of students who will pass??


Harley Weston lui répond.
Parallel and perpendicular lines 1999-04-23
Crystal Pilling pose la question :
My name is Crystal Pilling and I am in 9th grade algebra. We are currently studying parallel and perpendicular lines. I am having trouble with this problem: 3/4x - 5y= 16, (5,-6) I have to find a line that is perpindicular to this line on a graph.
HELP ME PLEASE!!!!!

Penny Nom lui répond.
Angles in Polygons 1999-01-21
Jen pose la question :
  • How do u find the interior angles of a pentagon when you are given 4 of the angles and you need to find the fifth?

  • If you are given the measure of each exterior angle of a regular polygon, how do you figure out how many sides the polygon has?

  • i need all information on polygons and how to find their angles!!!

Jack LeSage lui répond.
Concurrent Lines in a Triangle 1998-08-10
Chris Woolf pose la question :
The question is Name four types of concurrent lines, rays, or segments that are associated with triangles.
Chris Fisher lui répond.
Pentominoes 1996-11-14
Sam Maraldo pose la question :
What is a pentominoe? I need to understand the concept and how/why it is used?
Penny Nom lui répond.
A tangent to a circle is perpendicular to the radius at the point of contact. 1996-10-22
Rita Leung pose la question :
I wonder if there is any proof for this theorem - A tangent to a circle is perpendicular to the radius at the point of contact. If there is any proof for that, can you tell me please?
Chris Fisher and Harley Weston lui répond.
A coin problem 1996-04-16
Julie Hebert and Simon Hamel pose la question :
How many weighings would you need to find out which pile is fraudulent?
Penny Nom lui répond.
 
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