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Working with decimals |
2010-01-29 |
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From linda:
Write 3 numbers that are between the following:
2.15 meters and
2.17 meters
Answered by Harley Weston. |
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An isosceles triangle |
2010-01-28 |
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From Jazzy:
An isosceles triangle is a 2 congruent (equal) sides. Of the third side is three times the length of the congruent side(s), and the perimeter is 75 cm, find the length of all three sides of the triangle
Answered by Penny Nom. |
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Linear growth |
2010-01-27 |
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From S.:
I. Linear Growth:
Suppose that the town has a fixed increase in population growth number of population increase each year.
Choose the amount of population growth each year = 200
(Hint: Choose a whole number for your growth rate, rather than a percent.)
a) Fill in the following chart:
Year (t) Population (P)
t = 0
(2010) 1000
t = 1
(2011) 1000+200=1200
t = 2
(2012) 1000+400=1400
t = 3
(2013) 1000+600=1600
b) Find a linear equation in the form P = mt + b (y = mx + b), which gives the population, P, t years from 2010.
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Answered by Melanie Tyrer. |
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Packing spheres in a given region |
2010-01-27 |
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From MISAEL:
IN A VOLUME GENERATED BY TWO TRAPEZOIDS WITH DIFFERENT SURFACE AREAS BUT SHARING THE BOTTOM PLANE:
HOW CAN I CALCULATE THE "N" SPHERES WHICH THIS VOLUME CAN CONTAIN?
HOW CAN I CALCULATE THE VOLUME OF SPACES IN RELATIONSHIP WITH VOLUME OF SPHERES OR THE TOTAL VOLUME?
Answered by Robert Dawson. |
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The perimeter of a rectangle |
2010-01-27 |
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From debbie:
how many dimensions are there to get a perimeter of 400 feet for a rectangle?
Answered by Penny Nom. |
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What is the length of my sidewalk? |
2010-01-27 |
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From Les:
Name: Les
Who are you: Student
I have a sidewalk 4"thick,4ft. wide,and I have 2cubic yards of concrete. What is the length of my sidewalk?
Answered by Penny Nom. |
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A sequence |
2010-01-27 |
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From Haku:
if there are 8 dots in the first shape, 13 in the second, 19 in the third, and 26 in the fourth, then what is the formula?
Answered by Penny Nom. |
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Growth rates |
2010-01-26 |
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From Bhavya:
Dear Sir/Ma'am,
I read in the text book that the growth rates of these 3 functions are as below-
n2/3 < n/lg n < n0.99
I tried the substitution method to check the correctness of this. But it gets really tough as n increase.
Is there any simpler way to understand the correctness of these growth rates?
Thanks and Regards,
Bhavya
Answered by Robert Dawson. |
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Mill |
2010-01-26 |
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From Kenneth:
Is a mill, as it pertains to property taxes, regarded as a unit of measure like a meter or an hour, etc?
Answered by Robert Dawson. |
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A 30% markup and a 20% sale |
2010-01-25 |
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From stephanie:
A car is marked up 30% from its wholesale price.During a sale the retail price is reduced by 20% .What percent higher is the sale price from the wholesale price.
Answered by Penny Nom. |
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A cylinder is cut at an angle of 20 degrees |
2010-01-25 |
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From sanjay:
If I have a cylinder with 40mm diameter and I will cut it at an angle
20 degrees so what would be the increased radius or dia.??? of the cylinder
Answered by Penny Nom. |
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A tunnel from Toronto to Montreal |
2010-01-25 |
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From Dave:
I want to make a tunnel from Toronto to Montreal (for example)
Something like this
http://mathcentral.uregina.ca/QQ/database/QQ.09.09/h/grant1.html
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My coordinates are 45.442455,-73.861340 (Montreal) and 43.442455, -79.861340 (Toronto)
I need to know how to find arc distance, chord distance and radius
What websites can i find for this subject
Google has many but they are useless (blah blah) websites
LOL
Thanks
Answered by Chris Fisher and Robert Dawson. |
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A triangle in a rectangle |
2010-01-25 |
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From Sangya:
The perimeter of the rectangle is 21 inches. The perimeter of the inscribed triangle is 21 inches. Find the dimensions of the rectangle
Answered by Robert Dawson. |
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Sample variance |
2010-01-25 |
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From shodhan:
A series of 100 measurements of a physical quantity have been made that show a random fluctions characterized by a sample variance of 2% of teh mean value. If the series is lengthed to 1000 measurements made under the same conditions, estimates the sample variance of the larger set of data.
Answered by Robert Dawson. |
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Solving a triangle |
2010-01-25 |
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From Paige:
how do i solve a triangle with one angle of 73 degrees,
one angle of 32 degrees, and one side of 23cm?
Answered by Harley Weston. |
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