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The nth term 2006-12-15
Lisa pose la question :
I have worked out that the nth term for 1, 4, 9, 16 is n squared and 3, 5, 7, 9 is 2n - 1, so what is the rule for the sequence 1x3, 4x5, 9x7, 16x9?
Penny Nom lui répond.
The nth term 2006-12-14
Hepzibah pose la question :
what is the definition of nth term and n?
Penny Nom lui répond.
A trig identity 2006-12-14
Zamira pose la question :
i need help with this proof: ((cot(x)-tan(x))/ cot(x) + tan(x)) = cos (x)
Penny Nom lui répond.
I want to convert milliliters into grams. 2006-12-14
Kenchotenzin pose la question :
I want to convert milliliters into grams.
Penny Nom lui répond.
cos(n)pi = (-1)^n 2006-12-14
Idrees pose la question :
How can I prove the following: cos(n)pi = (-1)^n
Steve La Rocque lui répond.
Equal ratios 2006-12-13
Velkis pose la question :
5:18=20:?
Penny Nom lui répond.
Place value, coins and money 2006-12-12
Emily pose la question :
I was wondering what the best way would be to teach place value using coins and money. I have used base ten blocks already and am looking for a way to integrate money, perhaps on a place value chart and perhaps using decimals.
Diane Hanson lui répond.
The average of 3 tests 2006-12-12
Charles pose la question :
If you average 84 on first three test and the first score was 67. The second score was 7 less than the third score. What was the score on the second and third test.
Stephen La Rocque lui répond.
The Pythagorean theorem 2006-12-12
Beth pose la question :
In a pythagorean theorem can the sides of a right triangle be three consecutive odd integers
Stephen La Rocque lui répond.
Drilling holes in a cube 2006-12-12
Liz pose la question :
What is the volume of the solid remaining if a unit cube has a hole drilled thru one face to the opposite side and the hole that is drilled is a cylinder of unit diameter. Then the cube is rotated and an identical hole is drilled from an untouched face to the opposite side. Then the cube is rotated and an identical hole is drilled between the last two untouched faces. This will result in the cube vertices and the remaining volume of the cube falling into 8 parts. What is the total volume of these 8 parts. How is this volume calculated?
Penny Nom lui répond.
The sum of the angles in a triangle 2006-12-12
Becky pose la question :
Why does a triangle always equal 180 degrees? We know that all the angles add up to 180 degrees but cant find a valid reason for it.
Penny Nom lui répond.
Cary was going to meet Jane at the airport, ... 2006-12-11
Carmen pose la question :
cary was going to meet jane at the airport, if he traveled 60mph, he would arrive one hour early, and he traveled 30 mph, he would arrive one hour late. how far was the airport? recall: distance=speed(time)
Stephen La Rocque lui répond.
Circles and polygons 2006-12-11
Irene pose la question :
Can you define a circle as a polygon with an infinite number of sides which are infinitely small? If you can, can you then define a cylinder as a prism? The sides would be rectangles or parallelograms with one length infinitely small?
Chris Fisher lui répond.
The absolute value of imaginary and complex numbers 2006-12-11
Keith pose la question :
i don't get how to find the absolute value of imaginary and complex numbers here is an examples from the text book the answers are given but they don't show the work so i can follow along just show me the work please and explain how it is done

problem
3+4i

Stephen La Rocque and Penny Nom lui répond.
Base 5 2006-12-11
Shelley pose la question :
how do you convert decimal numbers to a given base for example 2,875 to base five?
Stephen La Rocque lui répond.
 
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