 |
|
|
|
|
|
|
|
|
Books on a shelf |
2009-10-25 |
|
From Julie:
a bookshelf is 36 inches long and contains (x) books each (n) inches thick. If each book half an inch thinner, the shelf would hold six more of the same book. What is x/n
Answered by Penny Nom. |
|
|
|
|
|
|
Cutting a pipe at an arbitrary angle |
2009-10-24 |
|
From Carol:
I have read your article on cutting pipe,etc. at a 45 degree angle. I need to develop
an equation and pattern for cutting any size pipe (3" to 7") to any degree. I don't
understand how to transfer the wave pattern to graph paper.
Thanks.
Answered by Harley Weston. |
|
|
|
|
|
|
A word problem |
2009-10-24 |
|
From Ryan:
Two times one number plus 7 times another number is equal to 17. the first number plus the second number is equal to 25. What are the two numbers? Please Help!
Answered by Penny Nom. |
|
|
|
|
|
|
Four consecutive odd integers |
2009-10-24 |
|
From Tonya:
the sum of four consecutive odd intergers 2008 what are the intergers
Answered by Penny Nom. |
|
|
|
|
|
|
What jobs use conics? |
2009-10-22 |
|
From denise:
i have to type a paper on what jobs use conics and i can not find anything can you help
thanks
Denise
Answered by Penny Nom. |
|
|
|
|
|
|
A linear equation |
2009-10-22 |
|
From Ryan:
How do you convert the equation 2x-6y=7? This is on my homework and I am really stuck!!!
Answered by Penny Nom. |
|
|
|
|
|
|
e^pi and pi^e |
2009-10-22 |
|
From Natalie:
Question from natalie, a student:
Without using your calculator, prove which is bigger: e^pi or pi^e
we talked about ad absurdum in class, so I'm assuming that is how I approach this question, but since neither of them have a variable( like the examples we actually solved in class), I'm not quite sure how to solve it....
Answered by Harley Weston. |
|
|
|
|
|
|
The inverse of f(x)=-1/x^2 |
2009-10-22 |
|
From Jasmine:
how to solve f(x)=-1/x^2 --> find f-1[x], than state if its a function
Answered by Harley Weston. |
|
|
|
|
|
|
Le volume d'une boule |
2009-10-22 |
|
From ve.lu.ch:
Pour calculer le volume d'une boule, il faut utiliser la formule :
4/3 x Pi x R au cube
Pourquoi 4/3 ?
Merci d'avance
Answered by Pierre-Louis Gagnon et Claude Tardif. |
|
|
|
|
|
|
Forming a square |
2009-10-21 |
|
From christianah:
Two parallel lines have the equations y=x+4 and y=x-2.Two additional lines are drawn to form a square.What is the side length of the square?Write possible equations for the additional lines.Explain and justify your reasoning.
Answered by Penny Nom. |
|
|
|
|
|
|
A sequence |
2009-10-20 |
|
From Alyce:
The rule of this sequence is k=1/8n. Find the 8th term of the sequence.
1/8, 1/4, 3/8, 1/2, ...
Thanks!
Answered by Penny Nom. |
|
|
|
|
|
|
A linear system |
2009-10-20 |
|
From marissa:
Solve this linear system
2x-y=5
3x+y=-9
Answered by Penny Nom. |
|
|
|
|
|
|
How much fabric will I need? |
2009-10-20 |
|
From Coach Jones:
I have a new ideal and need to know how much fabric will I need to order.
My design is 16'6" long, 10' wide and 24" tale. How much fabric will I need for the
Top, Bottom and the Walls?
Thanks
Coach Jones
Answered by Penny Nom. |
|
|
|
|
|
|
A line and a circle |
2009-10-19 |
|
From Renson:
Determine whether the line x-2y=0 cuts,touches or fail to meet the circle x^2+y^2-8x+6y-15=0.If it touches or cuts ,find the coordinates of the point(s) of contact
Answered by Harley Weston. |
|
|
|
|
|
|
The hypotenuse of a right triangle |
2009-10-18 |
|
From steven:
the perimeter of a right triangle is 20 cm. its area is 15 sq cm. find its hypotenuse.
Answered by Penny Nom. |
|
|
