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The radius of a planet |
2008-01-06 |
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From Ben:
Two people who are both h feet tall are standing on a spherical planet. One person walks a distance d in feet away from the the other person. At this point, the person walking turns around and can no longer see the top of the other persons head. What is the radius of the planet?
Answered by Stephen La Rocque and Harley Weston. |
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Partial fractions |
2008-01-06 |
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From taiwo:
i copied the question below from john bird's higher engineering mathematics
fourth edition (pg 19) after solving all the partial fraction questions from the book
except this:
x^3 + 4^2 + 20x - 7 over (x-1)^2 (x^+8). i will appreciate it if you help me out so i can
know whether their answer is correct. thanks alot
Answered by Harley Weston. |
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The area of a piece of property |
2008-01-05 |
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From Greg:
I need to know the area of a six sided piece of property. I sent a map by regular mail.
Answered by Harley Weston. |
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One trillion divided by 2,600,000 |
2008-01-05 |
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From Carlton:
If you divide one trillion by 2,600,000 what is the answer?
Answered by Penny Nom. |
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What is the speed of the plane in still air? |
2008-01-05 |
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From oscar:
A plane flies 400 miles with the wind and 340 miles against the wind
in the same length of time. If the speed of the wind is 24mph, what is
the speed of the plane in still air?
Answered by Penny Nom. |
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The height of a triangle |
2008-01-04 |
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From Dara:
The area of a triangle is 54m2. If its base is 5m, find its height.
Answered by Penny Nom. |
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The shortest distance to a line |
2008-01-04 |
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From nana:
3y+4x-12=0 is the equation of the line AB on a graph......the line AB joins both y and x axises together.....point A is on y axis and its value is 3....point B is on x axis and its value is 4.....Question : from point O(0,0).find the point ont the line AB
Answered by Stephen La Rocque. |
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A tangent to a circle |
2008-01-04 |
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From adam:
Find a>0 so that the line y=x+a is a tangent to the circle x^2 +y^2=2.
Answered by Stephen La Rocque and Harley Weston. |
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Factoring x^2 + 25 |
2008-01-04 |
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From Geri:
what does x squared plus twenty five factor out to?
Answered by Penny Nom. |
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Surds |
2008-01-04 |
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From INDRAJIT:
SUBJECT: SURD
How do I simplify this expression with surds in the denominator?
INDRAJIT
INDIA
Answered by Stephen La Rocque. |
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Protecting a carrot patch |
2008-01-03 |
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From Kate:
A farmer has a problem with rabbits and skunks
in his rectangular carrot patch that is 21m^2 in area. Determine the
dimensions that will require the least amount of fencing if a barn can
be used to protect one side of the garden.
Answered by Stephen La Rocque. |
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The 5% GST |
2008-01-03 |
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From Kim:
If I have spent $1700 what portion is GST now that the rate has dropped to 5%?
Answered by Stephen La Rocque. |
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What length of hose will I need? |
2008-01-03 |
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From Justin:
I have one cubic yard of liquid that I want to convert to a cylindrical volume with the inside dimensions being 3/4 of an inch. I am trying determine what the height/length would be to set these equal. i.e. What length of hose will I need (with an inside diameter of 3/4") in order to accommodate exactly one cubic yard of liquid?
Answered by Penny Nom. |
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Percentage of an acre |
2008-01-03 |
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From Christine:
Given that an acre is 43,560 sq/ft; If a piece of property is 19,506 sq/ft, What percentage of an acre is it?
Answered by Stephen La Rocque. |
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Retail hiring in Britain |
2008-01-03 |
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From ROGI:
major hiring in retail in BRITAIN,ACCORDING TO MORE IN STORE ARE ASFOLLOWS:9,000 AT SAFEWAY; 5000 AT BOOTS; 3400 AT DEBENHAM; AND 1700 AT MARKS AND SPENCER. WHAT IS PROBABILITY THAT THE A RANDOMLY SELECTED NEW HIRE FROM THESE WAS HIRED BY MARKS AND SPENCER?
Answered by Penny Nom. |
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