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Compatible numbers |
2007-09-05 |
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Beth pose la question :
Estimate using compatible numbers:
2 X 3978 =
102/25 =
Stephen la Rocque lui répond. |
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A right angles triangle |
2007-09-05 |
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Daryl pose la question :
I have a right-angled triangle. two of its sides are 12.6cm. The third/last line is missing. How can I find the length of the last line?
Stephen La Rocque and Penny Nom lui répond. |
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The area of a circle knowing only the length of a chord |
2007-09-05 |
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James pose la question :
I need some help in the right directions with a problem. I was presented with a problem where I need to find the area of a circle knowing only the length of a chord.
the is a circle in the center of a larger circle (which the size of either could change) the only thing that matter is that the chord is 100 ft long and rests on top of the smaller circle.
Stephen la Rocque and Brennan Yaremko lui répond. |
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Making dot arrays |
2007-09-05 |
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angela pose la question :
What do we call the numbers that cannot be arranged into 2-row arrays?
Penny Nom lui répond. |
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X^3 = 3/10 |
2007-09-05 |
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ioana pose la question :
If we have X at power 3 that result equally with 3/10 haw much X is ??
Penny Nom lui répond. |
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Factoring a quadratic |
2007-09-04 |
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Arlene pose la question :
Question from arlene, a student:
x^+2x-24=0
Stephen la Rocque lui répond. |
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Variable expressions - part 2 |
2007-09-04 |
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lisa pose la question :
how do I write a variable expression for word phrase example x less than =
2 or 2 less than p
4 fewer than job please help
Penny Nom lui répond. |
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Variable expressions |
2007-09-04 |
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Eric pose la question :
how so i write a numerical or variable expression for each quantity.
example two dozen eggs or d dozen eggs
number of quarts ub a 3 gallons
Penny Nom lui répond. |
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The first five terms |
2007-09-04 |
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JP pose la question :
Find the first five terms of a sequence with the nth term n^2+2n+1
and 2^n.
Penny Nom lui répond. |
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Speed of sunrise |
2007-09-04 |
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Robert pose la question :
Facing west in a car, you are watching the sun rise (through the rear view mirror). It peaks the horizon, you take off driving. How fast would you have to drive, to see it rise again?
Stephen La Rocque lui répond. |
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Combinations of 4 letters from 8 letters |
2007-09-04 |
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Heidi pose la question :
how many different combinations of 4 letters can be made from a set of 8 letters?
Harley Weston lui répond. |
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Triangles, squares and pentagons? |
2007-09-04 |
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Malea pose la question :
How do you find the nth term in a set of triangles, squares and pentagons?
Harley Weston lui répond. |
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Palindromes |
2007-09-04 |
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ANJUM pose la question :
Are there palindromes in decimals and fractions?
Harley Weston lui répond. |
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Four digit combinations |
2007-09-04 |
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Natalie pose la question :
Using The Numbers 7 4 5
How many different 4-digit combinations are possible, you can use any of the numbers twice.
Penny Nom lui répond. |
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The tangent to y = x^3 at x = 0 |
2007-09-04 |
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Amit pose la question :
consider the equation = x^3. The equation of tangent to this curve (which is smmetrical in Ist and IVth quadrant) at (0,0) is y=0, which is x-axis.
but graphically one can visulize that x-axis intersects the curve, so how can it be the tangent to the curve. Please help.
Harley Weston lui répond. |
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