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Rondo the snail |
2011-01-05 |
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From Kristen:
He trained his snail, Rondo, to crawl around a 6 x 8 rectangle. Rondo stayed exactly 3 cm from teh rectangle at all times. What is the total area that Rondo surrounded with his slime trail?
Answered by Penny Nom. |
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A golf holiday |
2011-01-04 |
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From Andy:
You kindly responded to a question I previously sent with regard to a Golf Holiday and I wonder if I might ask another question please. There are now 7 players playing 5 rounds of golf and I wonder if it is possible to devise a schedule where everyone plays with each other a minimum of two times i.e. they will play twice with some and three times with others. As always, many thanks for your kind assistance.
Answered by Victoria West. |
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Line segments |
2011-01-04 |
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From Izsak:
What is the formula to find the number of segments that can be named by a given number of points on a line?
Answered by Penny Nom. |
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If ac = bc ... |
2011-01-04 |
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From jamielle:
if ac=bc, then a is not equal to b, c is not equal to zero
Answered by Penny Nom. |
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The intercept form |
2011-01-04 |
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From sussie:
How do you find the intercept form of y=X^2-2x-3?
Answered by Penny Nom. |
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A tangent line |
2011-01-03 |
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From Amanda:
Question from Amanda, a student:
an equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is
(A) y=-6x-6
(B) y= -3x+1
(C) y= 2x+10
(D) y=3x-1
(E) y=4x+1
Answered by Penny Nom. |
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Exponential form |
2011-01-02 |
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From jumana:
find any five examples of exponential form from real life situation
Answered by Penny Nom. |
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A circle inside a square |
2010-12-31 |
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From Jenn:
A circle of a diameter of 2 is drawn inside a square of 4. The circle's center is at the center of the square. To the nearest tenth, what is the perimeter of the area of the square, not including the circle inside.
Answered by Penny Nom. |
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A truncated cone |
2010-12-31 |
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From jagjeet:
dear suppose i have cone of 50cm radius at base and 100cm radius at top at a height of 80cm. now keeping base radius of 50cm and height of 80cm i want to increase top radius to 150cm how will i do that. plz height m talking abt is vertical height not slant height
Answered by Penny Nom. |
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The third side of a triangle |
2010-12-28 |
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From andrea:
in triangle abc, a-b=5 and the area is 50cm2.If angle c- 90degrees, find the length
of c.
Answered by Penny Nom. |
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A polynomial remainder |
2010-12-25 |
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From Asterdine:
When a polynomial f(x) is divided by x+1 and x+2, the remainders are 3 and 7 respectively. Find the remainder when f(x) is divided by (x+2)(x+1).
Answered by Penny Nom. |
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Economic data |
2010-12-24 |
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From Le:
I'm student in economics. I have to read some research of test of financial model (test of Black, 1972, Fama et McBeth, 1973, Fama et French, 1993, about the CAPM or APT model). And I really want to redo these tests with the same data to understand them better. But I don't know where and how I can have these data. I hope to have some recommendations from you.
Thank you,
Le Thi Bich Hanh
Answered by Robert Dawson. |
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The thermal expansion of steel |
2010-12-20 |
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From roger:
Knowing that the coefficient of thermal expansion of steel is 6.5E-06
in/in/deg F. How do you calculate the loads applied as a result of the expansion?
Answered by Robert Dawson. |
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An air duct in the form of a circular cylinder |
2010-12-19 |
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From ed:
an air duct in the form of a circular cylinder has a cross section if diameter 16 in. the distance between the bases is 20 ft and the elements are inclined at an angle of 50 degrees to the bases. find the amount of magnesia required to protect the duct with magnesia covering 1/2 in thick? tnx
Answered by Stephen La Rocque. |
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Profit as a percent |
2010-12-19 |
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From gaurav:
In the following, which calculation is right to calculate the profit percent.
if profit is 20%- 100*1.2 = 120
if profit is 20%- 100/0.8 = 125?
Answered by Penny Nom. |
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