 |
|
|
|
|
|
|
|
|
The identity property |
2002-11-07 |
|
From Stephanie:
I am a student teacher this semester in the third grade. I was looking at our math competencies and saw that we needed to teach the identity property. Is this the same as the distributive property? If not, what is it?
Answered by Penny Nom. |
|
|
|
|
|
|
Chisanbop |
2002-11-07 |
|
From Paul:
I'm trying to find the book/books that explain this system? I have one small book that explains the very beginning of the system, but covers only about 10 to 20%. I'v tried several book sellers and have had no luck.
Answered by Diane Hanson. |
|
|
|
|
|
|
Substitution |
2002-11-06 |
|
From John Paul:
I took a math test last week, and there was a problem which the teacher checked as incorrect. It was:
Solve: (a)RcTc=360;(b)RmTm=480;(c)Rm=2Rc; (d)Tm+Tc=15 I solved the problem and I got the following values for each variable.
For Rc=40 For Tc=9
For Rm=96 For Tm=5 I don't see nothing wrong, but the teacher checked it as wrong. Could it be a checking mistake?
Answered by Claude Tardif. |
|
|
|
|
|
|
Determining a parabola |
2002-11-06 |
|
From Shelley:
let (0,3) and (1,9)and (-1,1) be given points in a parablola. Determine a b and c
Answered by Penny Nom. |
|
|
|
|
|
|
What is nth term? |
2002-11-06 |
|
From Joga:
What is nth term: First sequence:
2, 4,7,11, 16, nth term Second sequence:
4,10, 28, 82, nth term
Answered by Penny Nom. |
|
|
|
|
|
|
18m-11+ -7 |
2002-11-06 |
|
From Sophia:
what is 18m-11+ -7 (m = to 12)?
Answered by Penny Nom. |
|
|
|
|
|
|
A house's selling price |
2002-11-05 |
|
From Tanisha:
a CERTAIN REAL-ESTATE AGENT RECEIVES $6 FOR EVERY $100 OF A HOUSE'S SELLING PRICE. HOW MUCH WAS A HOUSE SOLD FOR IF THE AGENT $10,725._
Answered by Penny Nom. |
|
|
|
|
|
|
Compass points |
2002-11-05 |
|
From Mhairi:
I was asked this in maths but I am not sure if it is geography. Name all the compass points? We have been given 8 but he told us there is more and we have to name them.
Answered by Chris Fisher. |
|
|
|
|
|
|
The percentage grade of that hill |
2002-11-05 |
|
From Cathy:
If there is an 80ft climb over a kilometer(about 3280ft) what is the percentage grade of that hill?
Answered by Penny Nom. |
|
|
|
|
|
|
An octagon of perimeter 1,000 meters |
2002-11-05 |
|
From Stephen:
my son has to work out the area of a octagon with a outside perimeter of 1,000 metres,
Answered by Penny Nom. |
|
|
|
|
|
|
Clown has eight steps to climb |
2002-11-05 |
|
From A mom:
I'm a parent of a grade two student. What is the best way to help my son figure out a math comprehension problem? Clown has eight steps to climb, is shown in a picture with front foot on third step and behind foot on first step. Each time he climbs three steps, he falls back two. How many times did he have to climb up to reach the top. Should I get him to do a line graph or math equations. On his own he came up with the answer seven. I think the answer is six. I did 0+3=3, 3-2=1, 1+3=4 and so on, In think my why is alittle confusing to him. Is there a simplier why to explain it to him.
Answered by Diane Hanson. |
|
|
|
|
|
|
A twelve-volume set of encyclopedias |
2002-11-04 |
|
From Ron:
A novice librarian shelved a twelve-volume set of encyclopedias in the following order from left to right. Volumes 8, 11, 5, 4, 9, 1, 7, 6, 10, 3, 12, and 2. Using her system, where will volume 13 go?
Answered by Penny Nom. |
|
|
|
|
|
|
Rounding 27.27 |
2002-11-03 |
|
From A parent:
If you have a problem 27.27 and you need to round to the first 7 the answer would be 27 Would 27.0 be acceptable as well or is it completely wrong.
Answered by Penny Nom. |
|
|
|
|
|
|
Mathematics and Music |
2002-11-01 |
|
From Hannah:
I am looking for a science fair project to compare math and music and how they relate. If you have any project ideas for me, they would be greatly appreciated.
Answered by Walter Whiteley. |
|
|
|
|
|
|
How would you find the length of the chord? |
2002-10-31 |
|
From A draftsperson:
If given the length of an arc and the distance from the midpoint of the arc to the midpoint of a chord, how would you find the length of the chord and the radius of the arc. The chords endpoints are the same as the the arcs endpoints.
Answered by Penny Nom. |
|
|
