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Iago the Insect lives on the surface of a regular tetrahedron |
2006-12-29 |
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From Cassie:
Iago the Insect lives on the surface of a regular tetrahedron with edges of length 4 inches. He wants to travel on the surface from the midpoint of one edge to the midpoint of the opposite edge. What is the length of the shortest possible trip for Iago to do this? Two edges in a tetrahedron are opposite if they do not share a common endpoint!
Answered by Walter Whiteley. |
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Who invented the division symbol? |
2006-12-29 |
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From Alex:
Who invented the division symbol?
Answered by Penny Nom. |
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How many gallons of water does an 8 inch pipe that is 50 foot long hold? |
2006-12-29 |
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From Bryan:
How many gallons of water does an 8 inch pipe that is 50 foot long hold?
Answered by Penny Nom. |
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An isosceles triangle |
2006-12-29 |
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From Katrina:
Is there any way to calculate the height or the length of the equal sides of an isosceles triangle given only the base length and the angles?
Answered by Penny Nom. |
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What size pulley would I need? |
2006-12-29 |
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From Chris:
If I have a motor that's spinning at 950 RPM's with a pulley that's 6in diameter with a belt running to a generator, What size pulley would I need on the generator to make it spin at 3600 RPM
Answered by Penny Nom. |
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An octagon inscribed in a square |
2006-12-29 |
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From Richard:
An octagon is inscribed in a square so that the vertices of the octagon trisect the sides of the square. The perimeter of the square is 108 centimeters. What is the number of square centimeters in the area of the octagon?
Answered by Walter Whiteley. |
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A trig identity |
2006-12-28 |
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From Courteny:
Prove that 1 - cos 2x + sin 2x (divided by) 1 + cos 2x + sin 2x = tan x
Answered by Penny Nom. |
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A rhombus |
2006-12-26 |
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From Jose:
show mathematically that a quadrilateral whose vertices are A(2,1),B(6,-2) C(10,1),and D(6,4) is a rhombus
Answered by Penny Nom. |
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A quuadratic equation |
2006-12-22 |
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From Harold:
L=3w-4
A=96Square
I used the quadratic equation to solve and my answer is still wrong
I convert the square of 1168 to decimal.
here is where i start
(3w-4) x w=96
could you give me an example
Answered by Stephen La Rocque. |
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45 000 litres d'eau a 15 degres |
2006-12-21 |
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From Troussiere:
j'ai 45 000 litres d'eau a 15 degres combien de litres d'eau a 50 degres doit on rajouter pour obtenir une eau a 25 degres?
Answered by Claude Tardif. |
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6/x-2y - 15/x+y = 0.5 |
2006-12-21 |
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From Emeka:
6/x-2y - 15/x+y = 0.5
Answered by Stephen La Rocque. |
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Prove that square root of 3 is irrational. |
2006-12-21 |
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From Humera:
Prove that square root of 3 is irrational.
Answered by Stephen La Rocque. |
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A percentage |
2006-12-21 |
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From Kim:
At a company fish fry 1/2 in attendance are employees. Employees' spouses are 1/3 of the attendance. What is the percentage of the people in attendance who are not employees or employee spouses?
Answered by Stephen La Rocque. |
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Percentage increase |
2006-12-21 |
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From Wang:
The last week of a month a car dealership sold 12 cars. A new sales promotion came out the first week of the next month and the sold 19 cars that week. What was the percent increase in sales from the last week of the previous month compared to the first week of the next month?
Answered by Penny Nom. |
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Skill Testing Question |
2006-12-20 |
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From Tonia:
Skill Testing Question:
Multiply five(5) x four (4)
Add twenty two (22)
Divide by two (2)
Subtract six (6)
Answered by Penny Nom. |
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