 |
|
|
|
|
|
|
|
|
An onsale DVD player |
2003-07-09 |
|
From Kim:
I have a DVD player with a regular selling price of $175 and percentage of discount is 10 percent. How to solve for discount amount and sale price? Also, when you figure out the sale price how to figure out commission amount when percentage of commission is 5 percent?
Answered by Penny Nom. |
|
|
|
|
|
|
A wooden deck around a pool |
2003-07-09 |
|
From Dat:
A pond is enclosed by a wooden deck that is 3 feet wide. The fence surrounding the deck is 100 feet long. - If the pond is square, what are its dimensions?
- If the pond is rectangular and the length of the is three times its width, what are the dimensions of the pond?
- If the pond is circular, what is the diameter of the pond?
- Which pond has the most area?
Answered by Penny Nom. |
|
|
|
|
|
|
Two cars |
2003-07-09 |
|
From Nicole:
Two cars start off at the same point on a striaght highway facing opposite directions. Each car drives 6 miles, talkes a left turn, and drives for 8 miles. How far apart are the two cars.
Answered by Penny Nom. |
|
|
|
|
|
|
Is 3/5 CLOSEST to 0, 1/2 or 1? |
2003-07-09 |
|
From A student:
I would like to know is 3/5 CLOSEST to 0, 1/2 or 1. And can 3/10 go either way as to be closest to 0 or 1/2.
Answered by Penny Nom. |
|
|
|
|
|
|
A geometry problem |
2003-07-08 |
|
From Chris:
My name is Chris, I work for a custom fabricator company. I am needing a formula for the Height (H) shown in the attached picture. The picture shows dimensions for my current application. If you could please, assign variables to the dimensions.
Answered by Harley Weston. |
|
|
|
|
|
|
Volume of water in a pool |
2003-07-06 |
|
From An other:
How many litres of water are in a pool that is 16 feet in diameter and 35 inches deep?
Answered by Penny Nom. |
|
|
|
|
|
|
Opérations de base |
2003-07-05 |
|
From Anne-Marie:
Je m'appelle Anne-Marie et je suis enseignante de 5e année à l'école Domaine des copains de Balmoral au Nouveau-Brunswick. Récemment, j'ai participé à un concours intitulé: Budweiser King Pack Nascar Hat Promo. Afin de réclamer le prix, qui est une casquette, je devais répondre à une question réglementaire. Il s'agissait d'une phrase mathématique qui se présentait comme suit:
4 x 26 - 24 / 8 = qui se lit: 4 fois 26 moins 24 divisé
par 8
Answered by Claude Tardif. |
|
|
|
|
|
|
The length of fabric in a roll |
2003-07-03 |
|
From Paul:
We receive rolled fabric as part of our process and I would like to know is there a formula that could be used to estimate the overall length of the roll with out rolling the fabric out and measuring its length.
Answered by Harley Weston. |
|
|
|
|
|
|
Contradiction in the Procedural Precedence and the Distributive property |
2003-07-03 |
|
From Arthur:
When complicated expressions exist on both sides of a fraction, and both these expressions contain like and unlike terms with "literal" coefficients, the procedural precedence suddenly gets extremely confusing and seems impossible to simplify. This seems confusing and impossible to simplify because there is a HUGE contradiction in the way Procedural Precedence and the Distributive property deal with Parentheses. The Procedure says you MUST deal with what's INSIDE the parenthesis FIRST, BEFORE dealing with ANYTHING on the outside where as the Distributive property contradicts that by saying to go ahead and ignore the Precedence and use a factor on the outside of the Parenthesis.
Answered by Claude Tardif. |
|
|
|
|
|
|
C is 10 more then the square of... |
2003-07-03 |
|
From Carolina:
C is 10 more then the square of the quotient of the sum of x and y , and the product of x and y. Which equation expresses this relationship?
A. C=(x+y +10)^2 ___ xy
B. C=(x+y)^2 + 10 ___ xy
C. C=(xy)^2+10 ___ x+y
D. C=(x+y)^2 + 10 ___ xy
Answered by Penny Nom. |
|
|
|
|
|
|
The domain of 1/g(x) - 5 |
2003-07-03 |
|
From Barbara:
If the range of g(x) is ( neg. infinity,4] and the domain of g(x) is ( neg. infinity, infinity), how do I find the domain of 1/g(x) - 5?
Answered by Penny Nom. |
|
|
|
|
|
|
How much soil will be removed? |
2003-07-02 |
|
From Amy:
My site is 1230' (east-west) by 1300' (north-south) and we need to remove 2 feet of soil from the entire site, how much soil will be removed?
Answered by Penny Nom. |
|
|
|
|
|
|
Setting up a word problem |
2003-06-30 |
|
From Christie:
A rectangular corral is forty feet longer than it is wide. If the perimeter is 220 feet, determine the length and width of the corral.
Answered by Penny Nom. |
|
|
|
|
|
|
A ruler and compass construction |
2003-06-29 |
|
From Mandy:
I have been searching for instructions on how to do this using a compass. Can you please send instructions step by step on how to bisect a segment into any given number of segments. (example, a way that it will work for bisecting segment into 3, 4, or even 5 congruent parts)
Answered by Penny Nom. |
|
|
|
|
|
|
Solve x = y^z for z |
2003-06-28 |
|
From Nathan:
If x = y^z is there a way to solve for z, if x and y are given, without guessing or already knowing the answer?
ie: 64 = 2^z
6 is the obvious value for z. Is there a way I could solve for this variable using a formula, which would also apply when more complex values were substituted for x and y?
Answered by Penny Nom. |
|
|
