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A line parallel to a plane 2006-03-28
Ryan pose la question :

I was wondering how I would prove the following theorem. I am completely lost at this point and all my other ideas have been extremely complicated and somewhat blurry.

"Through a point outside a given plane, there is at least one line parallel to the given plane."


Chris Fisher lui répond.
If you pile the 4 bricks on top of each other ... 2006-03-27
Mike pose la question :
You have 4 bricks each with dimensions of 4" X 5" X 9". If you pile the 4 bricks on top of each other to form a tower how many different tower heights can be achieved? All four bricks must be used in each tower.
Claude Tardif lui répond.
Permutations and probability 2006-03-27
Alyssa pose la question :
I am a high school student, my teacher gave the class a worksheet on permutations and probability and told us to do independent work when we have not covered the material yet and he will not answer any questions. I am lost and don’t know where to begin. Can you help?

1. Find the number of 6-letter permutations of all the letters in EUCLID that end with either the letter E or the letter D?

Aluminum chips A, B. C, and D weigh 1g. 5g. 10g. and 20g. respectively. How many different masses can be measured by using one or more of the 4 weighs on a balance scale?

Stephen La Rocque lui répond.
The area of a triangle 2006-03-26
Colby pose la question :
the length of one side of a triangle is 2cm less than twice the length of the altitude to that side. the area of the triangle is 30 cm squared. find the length of the altitude.
first of all, what is an altitude? and how do i find it?

Penny Nom lui répond.
Adding fractions 2006-03-26
Barbara pose la question :
I know that to subtract 1/4 from 2/3 I must find a common denom. Now the 2/3 becomes 8/12.....i understand the 12, but where does the 8 come from?
Penny Nom lui répond.
Solve the equation cos x = sin 20 where x is acute. 2006-03-26
Elle pose la question :
Solve the equation cos x = sin 20 where x is acute.
Stephen La Rocque lui répond.
The area of a block of land 2006-03-26
Ronald pose la question :

I have a building block of land with four unequal sides and only one right angle. I want to know the total area (in metres) and how the calculations were carried out.

The four sides are: Rear of property: 9.14 metres
left side: 36.9 metres
Right side: 32.61 Metres
front to street: 27.43 Metres

The front to street and right side constitute a right angle. but there are no others.


Penny Nom lui répond.
Can an equilateral triangle have an obtuse angle? 2006-03-26
Chris pose la question :
Can an equilateral triangle have an obtuse angle?

I'm thinking not, because all sides must be equal, but
does that also imply that all angles are equal?


Stephen La Rocque lui répond.
A scale factor 2006-03-25
Jackie pose la question :
I need a formula or step by step help to show my child how to find missing dimensions for example: The scale factor for a model is 10 inches = ________ feet
Model 39.7 in
Actual 11.9 ft

Penny lui répond.
what is 9x3h for h = 2 2006-03-25
Dillon pose la question :
what is 9x3h for h = 2 just don't get it.
Penny Nom lui répond.
Acres 2006-03-25
Judy pose la question :
How do you turn land measurements into acres
Such as piece of property is 45 x 167

Penny Nom lui répond.
The cartesian product of a countably infinite collection of countably infinite sets 2006-03-25
Geetha pose la question :
Is the cartesian product of a countably infinite collection of countably infinite sets countable infinite?
Penny Nom lui répond.
How much fabric do I need? 2006-03-25
Michelle pose la question :

I AM DECORATING A STAGE FOR A BOARD OF DIRECTORS MEETING AND I NEED TO BUY FABRIC AND I DON’T WANT TO WASTE $$ BY BUYING TOO MUCH FABRIC OR NOT ENOUGH FABRIC.

THE AREA THAT I’M NEEDING MATERIAL FOR IS, 12ft HIGH BY 34ft WIDE.

THE FABRIC COMES IN ROLLS OF 60” (inches) x 100 yards.

SO HOW MUCH FABRIC SHOULD I NEED TO FOR THE AREA I’M WANTING TO COVER?


Stephen La Rocque and Penny Nom lui répond.
Two squares 2006-03-25
Debbie pose la question :
A small square is constructed. Then a new square is made by increasing each side by 2 meters. The perimeter of the new square is 3 meters shorter than 5 times the length of one side of the original square. Find the dimension of the original square
Stephen La Rocque lui répond.
Four digit numbers 2006-03-25
Kenvin pose la question :
i was wondering how many possibilities is there for a four digit number with the same first two numbers and the last two is not one of the first with numbers 1-9
Stephen La Rocque lui répond.
 
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