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A definite integral |
2009-02-09 |
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From Mathata:
Evaluate: integral from 0 to 1, x^2 e^x^3dx
Answered by Harley Weston. |
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Seating around a circular table |
2009-02-09 |
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From Jenny:
A committee of 15 -- 9 women and 6 men -- is to be seated at a circular table (with 15 seats). In how many ways can the seats be assigned so that no two men are seated next to each other?
Answered by Victoria West. |
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Fencing 5 acres |
2009-02-06 |
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From bob:
How many feet of fencing is required to fence in 5 acres
Answered by Harley Weston. |
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Making shapes with straws |
2009-02-06 |
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From Melissa:
suppose you have 60 straws. How many of each shape could you make
a) Triangles
b) squares
c) pentagons
d) hexagons
Answered by Stephen La Rocque. |
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Cubic centimeters and ounces |
2009-02-06 |
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From Dawn:
1-- syringe contains 5.5cc of medicine & cost $13.50
1 --2 oz bottle of medicine cost $17.50
How many cc's in 2 oz, & which is the better deal?
Answered by Stephen La Rocque. |
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Are these lines parallel? |
2009-02-06 |
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From Conor:
are these lines parallel?
y = 3x -2 and 6y = 3x +2
Answered by Stephen La Rocque. |
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A triangular pyramid |
2009-02-06 |
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From kamran:
what would be an example of a triangular pyramid
Answered by Stephen La Rocque. |
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A rectangular park |
2009-02-06 |
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From Debbie:
A park named Writer's Rectangle opened in town. When asked about the dimensions of the rectangle, the city planner, responded with these clues: ---The diagonals of the rectangular park plus its longer sides together measure seven times one of the shorter sides. ---The length of one diagonal is 250 m longer than one of the shorter sides. Use this information to find the area of the park.
Answered by Stephen La Rocque. |
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Catching up to the car ahead |
2009-02-06 |
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From Ashley:
Car A passes Car B on a freeway. The driver of Car B decides to speed up to 75 mph and catch Car A, whose driver is maintaining a constant speed.
Looking ahead, the driver of Car B sees Car A go under an overpass one-qarter mile up the road. Exactly six minutes later, Car B catches Car A.
How fast was the car going?
Answered by Penny Nom. |
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The height of a triangle |
2009-02-06 |
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From lisa:
find the height of a triangle, which can be split into two right triangles, but the base (4') is not split equally in half. No interior angles are given.
side a=3', side b=5'
Answered by Penny Nom. |
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How much did the statue originally cost him? |
2009-02-06 |
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From Debra:
Jim is able to sell a hand-carved statue for $670 which was a 35% profit over his cost. How much ded he statue originally cost him?
Answered by Penny Nom. |
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The substitution method |
2009-02-06 |
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From amber:
Pleasse help me with this problem
x+y=-2
y-2x=1
Answered by Penny Nom. |
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4 digit arrangements of 7 3 6 6 |
2009-02-05 |
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From Carole:
I need all the four digit combinations using the numbers 7 3 6 6
Answered by Penny Nom. |
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Conics |
2009-02-05 |
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From Jay:
If you were to design your own picture of a conic, what would it look like? And also if you had to use two conics from the solar system and a solar oven...?
Answered by Robert Dawson. |
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A trig limit |
2009-02-05 |
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From Samantha:
lim x-> 0 ( ( r*cos(wt +h) + r*cos(wt) )/ h )
Where r & w are constants.
Answered by Harley Weston. |
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