.
.
Math Central - mathcentral.uregina.ca
Quandaries & Queries
Q & Q
. .
Fresh off the press   Here are the newest items
added to Quandaries & Queries:
. .
start over

 
Page
640/886
60.5 ft at 90 mi/hr takes how long? 2006-01-13
From Bree:
A ball travels over 60.5 ft at 90 mi/hr. How fast does the ball travel?
Answered by Penny Nom.
5x^2 - 27x - 18 2006-01-13
From Katy:
How would you factor 5x2 - 27x - 18?
Answered by Penny Nom.
Arrays 2006-01-12
From Sergio and Anthony:

Hi my son Anthony is in Third Grade and the question on his homework that we're having trouble answering is the following:

Name two smaller arrays you can use to find the product. 6 x 9 = 54

What are they exactly asking? Which is the correct answer?


Answered by Diane Hanson and Penny Nom.
Convert to decimal form 2006-01-12
From A student:
I would like to know the full answer on how to turn the fraction 3 3/8 into a decimal please.
Answered by Penny Nom.
Percentage markup 2006-01-10
From Ian:

I have a markup question for you. I work for a painting company, specifically I estimate cost and sell painting projects. Within our office, we've had some discussion on how markup should be calculated for materials that we include in our prices. These are the two scenarios that we've come up with.

1. Mark up as a percentage of the cost: Cost = $ 10.00 X 15% Markup = $ 1.50. $ 1.50 + $ 10.00 equals $ 11.50 as a sale price.

2. Selling Price = Cost / (1-the desired profit margin). This would equal to $ 10.00 / (1-.15) = $ 11.76 roughly.

If you have any information on whether one is more correct and why, I would appreciate this. I want to make sure that I am marking things up correctly.


Answered by Harley Weston.
The volume of a piece of furnature 2006-01-10
From Kimberly:
What is the cubic feet for a piece of furniture that is 38" wide X 45" tall X 18" deep
Answered by Penny Nom.
How do I find the area with only one sides measurement? 2006-01-10
From Amy:
If you have a right triangle with the 90 degree angle located in the bottom left corner and the triangles most sloped line goes from the top left down to the right bottom. And the length of the slope line is 10(radical sign)with the radicand of 2. How do i find the area with only one sides measurement.
Answered by Penny Nom.
Barrels of oil in a tank 2006-01-09
From Francis:
How many barrels of oil (42 gallons of oil in one oil tank) would there be in an oil tank that was 15 feet tall and 10 feet across?
Answered by Penny Nom.
A question on conics 2006-01-09
From Reb:
i know how to convert the general formula into specific ones(ie.; a circle's specific formula x2 + y2 = r2 can be derived from this, and then you draw you graph), but i have no idea how to go from a graph to the general formula (you know the HUUUGE one...)
Answered by Penny Nom.
How do I calculate feet and inches to sq ft? 2006-01-09
From Rebecca:
How do I calculate feet and inches to sq ft?
Answered by Penny Nom.
10% of 20% of 40% of ... 2006-01-08
From Michael:
What is 10% Of 20% Of 40% Of 80% Of 1000?
Answered by Penny Nom.
y - y1 = m(x - x1) 2006-01-08
From Greg:
How do you change 2x + 3y = 7 into y - y1 = m(x-x1)?
Answered by Penny Nom.
GCF, LCM, primes and the ladder method 2006-01-07
From Linda:
How would I teach both finding the GCF and LCM with prime factors...I recall the ladder method vaguely.???
Answered by Penny Nom.
40 acres= how many square meters? 2006-01-07
From Janelle:
40 acres= how many meters?
Answered by Penny Nom.
For what divisors can you get a remainder of 8? 2006-01-06
From Thelma:
When dividing a 3 digit number by a 1 digit number, for what divisors can you get a remainder of 8?
Answered by Penny Nom.
 
Page
640/886

 

 


Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences.

CMS
.

 

Home Resource Room Home Resource Room Quandaries and Queries Mathematics with a Human Face About Math Central Problem of the Month Math Beyond School Outreach Activities Teacher's Bulletin Board Canadian Mathematical Society University of Regina PIMS