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Splitting the mortgage payment |
2010-04-09 |
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From Jodi:
What percentage of $2,500.00 (monthly mortgage payment)would I pay per month - if I make $2,200.00 per month and my partner makes $6000.00 per month?
Thank you.
Answered by Tyler Wood. |
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If a third is a fourth of a number, what is the number? |
2010-04-08 |
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From larry:
If a third is a fourth of a number, what is the number?
Answered by Penny Nom. |
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Backfilling the area around the outside of a pool |
2010-04-07 |
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From Craig:
I need to get dirt to fill an area 25ft x 25ft (think of a giant sandbox) HOWEVER, there is a pool 18 ft round in the middle of it. We need to backfill the area around the outside of the pool 6" deep. How much dirt will I need?
Answered by Penny Nom. |
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The area of a field of view |
2010-04-07 |
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From Frank:
I know we have a field of view of 90 degrees and the distance we can cover is 6 miles. What is the area we can cover/view?
A formula would be nice to have since the diameter or distance of the wedge area can change and the degree of the field of view can also change.
Thank you and I look forward to hearing from you.
Frank
Answered by Penny Nom. |
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A model for the population of a Canadian city |
2010-04-07 |
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From jess:
Let t^2 represent t-squared. The population of a Canadian City is modelled by: f(t) = 12t^2 + 800t + 40,000, where t is the time in years. When t= 0, the year is 2007.
a) According to the model, what will the population be in 2010?
B) In what year is the population predicted to be 300,000?
Answered by Penny Nom. |
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Does 1= 0.9999....? |
2010-04-07 |
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From Asia:
Does 1= 0.9999....? There seems to be different opinions on this.
Answered by Robert Dawson. |
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An isosceles trapezoid is inscribed in a circle |
2010-04-06 |
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From Abby:
An isosceles trapezoid whose bases have lengths 12 and 16 is inscribed in a circle of radius 10. The center of the circle lies in the interior of the trapezoid. Find the area of the trapezoid
Answered by Penny Nom. |
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Related rates and a rectangular sponge |
2010-04-06 |
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From Heather:
A rectangular sponge is increasing its length at 4cm/min, decreasing its width at 2cm/min, and increasing its height at 3cm/min. When its length, width and height are 40, 30, and 20 respectively, find the rate of change of volume and surface area.
Answered by Penny Nom. |
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A max min problem |
2010-04-06 |
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From Terry:
The vertex of a right circular cone and the circular edge of its base lie on the surface of a sphere with a radius of 2m. Find the dimensions of the cone of maximum volume that can be inscribed in the sphere.
Answered by Harley Weston. |
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The derivative of cos^3x |
2010-04-06 |
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From Erson:
Find y' of the given function: y = cos^3x.
Answered by Harley Weston. |
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Body measurements |
2010-04-06 |
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From Amirul:
Recently I'm proposing my research question to my teacher for my extended essay. I'm an IB student.
My research question is regarding the estimation of human in buying trousers through reference of neck. What does the relation between the diameter of the neck and the diameter of the waist?
I want to see how far does the estimation theory is true for different type of people with different BMI(body mass index)..
But teacher said that it is golden ratio...so nothing interesting... =(
really??? But i search on net.... state that my idea seems do not have any relation with the golden ratio so far..... i just want ask you... am I able to perform in my extended essay if i continue with this research question??
Answered by Robert Dawson. |
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Fitting a sofa through a doorway |
2010-04-06 |
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From Yvonne:
Hi, I would be most grateful if you could help me, because I have no idea how to work this out! I am moving from a house to a flat, and the doors in the flat are 70 cm wide. I have a sofa 88 x 88 x 215. Will it go through the door if we tip it sideways at an angle?
Thanks, Yvonne Beck
Answered by Robert Dawson. |
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The volume of a berm |
2010-04-05 |
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From jim:
a berm 6 ft wide x 112 ft long 18 inches high at center x 18 inches down to 0 front and back as a taper...how much soil do I need?
Answered by Penny Nom. |
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A regular hexagon and an equilateral triangle in a circle |
2010-04-05 |
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From Beth:
A regular hexagon and an equilateral triangle are both inscribed in the same circle so that the hexagon and the triangle share three vertices. The radius of the circle is 10cm. What is the difference between the area of the hexagon and the area of the triangle?
Answered by Chris Fisher. |
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A roll of polythene |
2010-04-04 |
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From Mary:
I have an area of 54square metres to cover how many rolls of 2m x 50m polythene do I need
Answered by Penny Nom. |
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