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Proof that the root of 27 is irrational |
2009-10-18 |
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Scarlet pose la question : How do you prove that the square root of 27 is irrational? Victoria West lui répond. |
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The equation of a circle |
2009-10-17 |
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Renson pose la question : A circle passes through (4,2) and (11,-5) with center on the line 3y-5x+41=0.Determine its equation in standard form. Penny Nom lui répond. |
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The next three terms |
2009-10-16 |
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Shawn pose la question : I'm a parent and don't know how to help my 6th grader solve for this problem.
Name the next tree terms in this sequence and tell the rule used to find each:
-1,0,1,0,1,2,3,8,25,..... Chris Fisher lui répond. |
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541.39(1 + i)^15 = 784.09 |
2009-10-14 |
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Fitore pose la question : Hi, I noticed that this question was already posted up, however I was hoping I could solve it without having to use logs. Can you please help me? The equation is:
541.39(1 + i)^15 = 784.09 Penny Nom lui répond. |
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Concentric circles |
2009-10-14 |
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maddy pose la question : Find the exact area of the region bounded by two concentric circles with radii 10 inches and 6 inches. Penny Nom lui répond. |
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The three angles of a triangle |
2009-10-13 |
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Michelle pose la question : The second angle of a triangular garden is four times as large as the first.
The third angle is 45 less than the sum of the other two angles.
Find the measure of the other two angles? Penny Nom lui répond. |
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What fraction of my goal has been raised? |
2009-10-13 |
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sally pose la question : If my goal is to raisel $300 and I have only raised $240 what
fraction of my goal has been raised Penny Nom lui répond. |
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The radius of an arc |
2009-10-13 |
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AYMAN pose la question : Question from ayman:
i would like to know the radius of an arc , i do not know the angle , can u please explian it with an example ,
all i know , or i think i know is a draw line , the reason i asked yu guys this Q , is i am a boilermaker apprentice , sometimes i do deal with a bended pipes or flate plates of metal .
when i try to do the same bend as these pipes , it is quite hard so for me to find out the radius of the pipe already bended & find out the angle i will be able to know the full length of the material thats all , thank you Robert Dawson lui répond. |
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How many gallons does it contain when it is 1/6 full? |
2009-10-13 |
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Bren-Nesha pose la question : A tank contains 200 gallons when it is 4/5 full. How many gallons does it contain when it is 1/6 full? I already know the answer but i would like to know how to arrive at the answer. Penny Nom lui répond. |
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The integral of sqrt(x) * ln(x) |
2009-10-12 |
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Oana pose la question : Hi! Can you tell me please how much is : ∫ (√x * ln x) ? Penny Nom lui répond. |
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The cube of a number plus five times the number plus 1 |
2009-10-12 |
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JP pose la question : Find a counterexample to the statement: The cube of a number added to the sum of five times the number and 1 is a prime number.The cube of a number added to the sum of five times the number and 1 is a prime number Penny Nom lui répond. |
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Integration of cos (x^2) dx |
2009-10-12 |
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Venkat pose la question : How do you evaluate the integration of cos (x^2) dx ? Harley Weston lui répond. |
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A max/min problem |
2009-10-12 |
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avien pose la question : a rectangle has a line of fixed length Lreaching from the vertex to the midpoint of one of the far sides. what is the maximum possible area of such a rectangle? SHOW SOLUTION USING CALCULUS Penny Nom lui répond. |
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A right triangle |
2009-10-12 |
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Josseph pose la question : A right triangle has an area of 84ft sq. and a hypotenuse 25ft long. What are the lengths of the other two sides? Penny Nom lui répond. |
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The area of a rectangle |
2009-10-10 |
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Ann pose la question : given a rectangle with sides a and 2a and diagonal d, find the area of the rectangle as a function of the diagonal,d Penny Nom lui répond. |
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